[原]发现一个好东西----Linux平台下常用工具描述：/var/cache/man/whatis ［D开头］
D开头：
d2i_509_CRL_fp [d2i_X509_CRL] (3ssl) - PKCS#10 certificate request functions
d2i_ASN1_OBJECT (3ssl) - ASN1 OBJECT IDENTIFIER functions
d2i_DHparams (3ssl) - PKCS#3 DH parameter functions
d2i_DSAPrivateKey [d2i_DSAPublicKey] (3ssl) - DSA key encoding and parsing functions
d2i_DSA_PUBKEY [d2i_DSAPublicKey] (3ssl) - DSA key encoding and parsing functions
d2i_DSAPublicKey (3ssl) - DSA key encoding and parsing functions
d2i_DSA_SIG [d2i_DSAPublicKey] (3ssl) - DSA key encoding and parsing functions
d2i_Netscape_RSA [d2i_RSAPublicKey] (3ssl) - RSA public and private key encoding functions
d2i_PKCS8PrivateKey_bio [d2i_PKCS8PrivateKey] (3ssl) - PKCS#8 format private key functions
d2i_PKCS8PrivateKey_fp [d2i_PKCS8PrivateKey] (3ssl) - PKCS#8 format private key functions
d2i_RSAPrivateKey [d2i_RSAPublicKey] (3ssl) - RSA public and private key encoding functions
d2i_RSA_PUBKEY [d2i_RSAPublicKey] (3ssl) - RSA public and private key encoding functions
d2i_RSAPublicKey (3ssl) - RSA public and private key encoding functions
d2i_SSL_SESSION (3ssl) - convert SSL_SESSION object from/to ASN1 representation
d2i_X509 (3ssl) - X509 encode and decode functions
d2i_X509_ALGOR (3ssl) - AlgorithmIdentifier functions
d2i_X509_bio [d2i_X509] (3ssl) - X509 encode and decode functions
d2i_X509_CRL (3ssl) - PKCS#10 certificate request functions
d2i_X509_CRL_bio [d2i_X509_CRL] (3ssl) - PKCS#10 certificate request functions
d2i_X509_fp [d2i_X509] (3ssl) - X509 encode and decode functions
d2i_X509_NAME (3ssl) - X509_NAME encoding functions
d2i_X509_REQ (3ssl) - PKCS#10 certificate request functions
d2i_X509_REQ_bio [d2i_X509_REQ] (3ssl) - PKCS#10 certificate request functions
d2i_X509_REQ_fp [d2i_X509_REQ] (3ssl) - PKCS#10 certificate request functions
d2i_X509_SIG (3ssl) - DigestInfo functions
daemon (3) - run in the background
Data::Dumper (3pm) - stringified perl data structures, suitable for both printing and eval
date (1) - print or set the system date and time
date (1p) - write the date and time
daylight [tzset] (3) - initialize time conversion information
daylight [tzset] (3p) - set timezone conversion information
db4-devel (rpm) - 用于 Berkeley DB (版本 4) 库的开发文件。
db4 (rpm) - C 语言的 Berkeley DB 数据库库(版本 4)。
DBE (3x) - Double Buffer Extension
DB_File (3pm) - Perl5 access to Berkeley DB version 1.x
DB_File [AnyDBM_File] (3pm) - various DBM implementations
dbm_clearerr [dbm_open] (3p) - database functions
dbm_close [dbm_open] (3p) - database functions
dbm_delete [dbm_open] (3p) - database functions
dbm_error [dbm_open] (3p) - database functions
dbm_fetch [dbm_open] (3p) - database functions
dbm_firstkey [dbm_open] (3p) - database functions
dbm_nextkey [dbm_open] (3p) - database functions
dbm_open (3p) - database functions
dbm_store [dbm_open] (3p) - database functions
dbus-cleanup-sockets (1) - clean up leftover sockets in a directory
dbus-daemon (1) - Message bus daemon
dbus-devel (rpm) - 用于 D-BUS 的库和头文件。
dbus-glib-devel (rpm) - Libraries and headers for the D-Bus GLib bindings
dbus-glib (rpm) - GLib bindings for D-Bus
dbus-launch (1) - Utility to start a message bus from a shell script
dbus-monitor (1) - debug probe to print message bus messages
dbus-python (rpm) - D-Bus Python Bindings
dbus (rpm) - D-BUS 信息总线
dbus-send (1) - Send a message to a message bus
dbus-x11 (rpm) - X11 所需的 D-BUS 插件
dc (1) - an arbitrary precision calculator
dcraw (1) - command-line decoder for raw digital photos
dcraw (rpm) - 从数码相机中解读原始图像数据的工具
dd (1) - convert and copy a file
dd (1p) - convert and copy a file
ddate (1) - converts Gregorian dates to Discordian dates
ddbugtopbm (1) - convert Diddle or DiddleBug sketches to PBM files
ddp (7) - Linux AppleTalk protocol implementation
deallocvt (1) - deallocate unused virtual consoles
debugfs (8) - ext2/ext3 file system debugger
declare [builtins] (1) - bash built-in commands, see bash(1)
DefaultColormap [AllPlanes] (3x) - Display macros and functions
DefaultColormapOfScreen [BlackPixelOfScreen] (3x) - screen information functions and macros
DefaultDepth [AllPlanes] (3x) - Display macros and functions
DefaultDepthOfScreen [BlackPixelOfScreen] (3x) - screen information functions and macros
DefaultGC [AllPlanes] (3x) - Display macros and functions
DefaultGCOfScreen [BlackPixelOfScreen] (3x) - screen information functions and macros
DefaultRootWindow [AllPlanes] (3x) - Display macros and functions
DefaultScreen [AllPlanes] (3x) - Display macros and functions
DefaultScreenOfDisplay [AllPlanes] (3x) - Display macros and functions
DefaultVisual [AllPlanes] (3x) - Display macros and functions
DefaultVisualOfScreen [BlackPixelOfScreen] (3x) - screen information functions and macros
define_key (3x) - define a keycode
def_prog_mode [curs_kernel] (3x) - low-level curses routines
def_shell_mode [curs_kernel] (3x) - low-level curses routines
dehtmldiff (1) - get usable diff from an HTML page
dejavu-lgc-fonts (rpm) - DejaVu LGC Fonts
delay_output [curs_util] (3x) - miscellaneous curses utility routines
delch [curs_delch] (3x) - delete character under the cursor in a curses window
del_curterm [curs_terminfo] (3x) - curses interfaces to terminfo database
deleteln [curs_deleteln] (3x) - delete and insert lines in a curses window
delete_module (2) - Delete a loadable module
delscreen [curs_initscr] (3x) - curses screen initialization and manipulation routines
delta (1p) - make a delta (change) to an SCCS file (DEVELOPMENT)
delwin [curs_window] (3x) - create curses windows
depmod (8) - program to generate modules.dep and map files
derwin [curs_window] (3x) - create curses windows
DES_cbc_cksum [des] (3ssl) - DES encryption
DES_cfb64_encrypt [des] (3ssl) - DES encryption
DES_cfb_encrypt [des] (3ssl) - DES encryption
des_crypt (3) - fast DES encryption
DES_crypt [des] (3ssl) - DES encryption
DES_ecb2_encrypt [des] (3ssl) - DES encryption
DES_ecb3_encrypt [des] (3ssl) - DES encryption
DES_ecb_encrypt [des] (3ssl) - DES encryption
DES_ede2_cbc_encrypt [des] (3ssl) - DES encryption
DES_ede2_cfb64_encrypt [des] (3ssl) - DES encryption
DES_ede2_ofb64_encrypt [des] (3ssl) - DES encryption
DES_ede3_cbc_encrypt [des] (3ssl) - DES encryption
DES_ede3_cbcm_encrypt [des] (3ssl) - DES encryption
DES_ede3_cfb64_encrypt [des] (3ssl) - DES encryption
DES_ede3_ofb64_encrypt [des] (3ssl) - DES encryption
DES_enc_read [des] (3ssl) - DES encryption
DES_enc_write [des] (3ssl) - DES encryption
DES_FAILED [des_crypt] (3) - fast DES encryption
DES_fcrypt [des] (3ssl) - DES encryption
DES_is_weak_key [des] (3ssl) - DES encryption
DES_key_sched [des] (3ssl) - DES encryption
desktop-backgrounds-basic (rpm) - 桌面背景基础集合。
desktop-file-utils (rpm) - 用来操作 .desktop 的工具程序
desktop-printing (rpm) - 桌面打印图标
DES_ncbc_encrypt [des] (3ssl) - DES encryption
DES_ofb64_encrypt [des] (3ssl) - DES encryption
DES_ofb_encrypt [des] (3ssl) - DES encryption
DES_pcbc_encrypt [des] (3ssl) - DES encryption
DES_quad_cksum [des] (3ssl) - DES encryption
DES_random_key [des] (3ssl) - DES encryption
des_read_2passwords [ui_compat] (3ssl) - Compatibility user interface functions
des_read_password [ui_compat] (3ssl) - Compatibility user interface functions
des_read_pw_string [ui_compat] (3ssl) - Compatibility user interface functions
des_read_pw [ui_compat] (3ssl) - Compatibility user interface functions
DES_set_key_checked [des] (3ssl) - DES encryption
DES_set_key [des] (3ssl) - DES encryption
DES_set_key_unchecked [des] (3ssl) - DES encryption
DES_set_odd_parity [des] (3ssl) - DES encryption
des_setparity [des_crypt] (3) - fast DES encryption
DES_string_to_2keys [des] (3ssl) - DES encryption
DES_string_to_key [des] (3ssl) - DES encryption
DES_xcbc_encrypt [des] (3ssl) - DES encryption
devdump [isoinfo] (8) - Utility programs for dumping and verifying iso9660 images
Devel::DProf (3pm) - a Perl code profiler
Devel::Peek (3pm) - A data debugging tool for the XS programmer
Devel::PPPort (3pm) - Perl/Pollution/Portability
Devel::SelfStubber (3pm) - generate stubs for a SelfLoading module
devhelp (rpm) - API 文档浏览器。
device-mapper-multipath (rpm) - 用 device-mapper 管理多路径设备的工具。
device-mapper (rpm) - device mapper 库
dev_lock [lockdev] (3) - manage device lockfiles
dev_relock [lockdev] (3) - manage device lockfiles
dev_testlock [lockdev] (3) - manage device lockfiles
dev_unlock [lockdev] (3) - manage device lockfiles
df (1p) - report free disk space
df (1) - report file system disk space usage
dfutool (1) - Device Firmware Upgrade utility
dgst (1ssl) - message digests
dh (3ssl) - Diffie-Hellman key agreement
dhcdbd (rpm) - DHCP D-BUS deamon (dhcdbd) 使用 D-BUS 控制 dhclient 客户端程序，保存并显示 DHCP 选项。
DH_check [DH_generate_parameters] (3ssl) - generate and check Diffie-Hellman parameters
dhclient (8) - Dynamic Host Configuration Protocol Client
dhclient.conf [dhclient] (5) - DHCP client configuration file
dhclient.leases [dhclient] (5) - DHCP client lease database
dhclient (rpm) - 提供 dhclient ISC DHCP 客户端守护进程和 dhclient 脚本。
dhclient-script (8) - DHCP client network configuration script
DH_compute_key [DH_generate_key] (3ssl) - perform Diffie-Hellman key exchange
dhcp6c (8) - DHCPv6 client daemon
dhcp6c.conf [dhcp6c] (5) - configuration file of the DHCPv6 client daemon, dhcp6c
dhcp-eval [dhclient-eval] (5) - ISC DHCP conditional evaluation
dhcp-options [dhclient-options] (5) - Dynamic Host Configuration Protocol options
dhcpv6_client (rpm) - DHCPv6 客户
DH_free [DH_new] (3ssl) - allocate and free DH objects
DH_generate_key (3ssl) - perform Diffie-Hellman key exchange
DH_generate_parameters (3ssl) - generate and check Diffie-Hellman parameters
DH_get_default_method [DH_set_method] (3ssl) - select DH method
DH_get_ex_data [DH_get_ex_new_index] (3ssl) - add application specific data to DH structures
DH_get_ex_new_index (3ssl) - add application specific data to DH structures
DH_new (3ssl) - allocate and free DH objects
DH_new_method [DH_set_method] (3ssl) - select DH method
DH_OpenSSL [DH_set_method] (3ssl) - select DH method
dhparam (1ssl) - DH parameter manipulation and generation
DHparams_print_fp [RSA_print] (3ssl) - print cryptographic parameters
DHparams_print [RSA_print] (3ssl) - print cryptographic parameters
DH_set_default_method [DH_set_method] (3ssl) - select DH method
DH_set_ex_data [DH_get_ex_new_index] (3ssl) - add application specific data to DH structures
DH_set_method (3ssl) - select DH method
DH_size (3ssl) - get Diffie-Hellman prime size
diagnostics (3pm) - produce verbose warning diagnostics
diagnostics [splain] (1) - produce verbose warning diagnostics
diff (1) - find differences between two files
diff (1p) - compare two files
diff3 (1) - find differences between three files
diffpp (1) - pretty-print diff outputs with GNU enscript
diffstat (1) - make histogram from diff-output
diffstat (rpm) - 基于 diff 命令输出来提供统计的工具。
difftime (3) - calculate time difference
difftime (3p) - compute the difference between two calendar time values
diffutils (rpm) - diff 工具的 GNU 集合。
dig (1) - DNS lookup utility
Digest (3pm) - Modules that calculate message digests
Digest::base (3pm) - Digest base class
Digest::file (3pm) - Calculate digests of files
Digest::HMAC (3pm) - Keyed-Hashing for Message Authentication
Digest::HMAC_MD5 (3pm) - Keyed-Hashing for Message Authentication
Digest::HMAC_SHA1 (3pm) - Keyed-Hashing for Message Authentication
Digest::MD5 (3pm) - Perl interface to the MD5 Algorithm
Digest::SHA1 (3pm) - Perl interface to the SHA-1 algorithm
dir (1) - list directory contents
dircolors (1) - color setup for ls
dir_colors (5) - configuration file for dircolors(1)
dirent.h [dirent] (0p) - format of directory entries
dirfd (3) - get directory stream file descriptor
DirHandle (3pm) - supply object methods for directory handles
dirname (1p) - return the directory portion of a pathname
dirname (1) - strip non-directory suffix from file name
dirname (3p) - report the parent directory name of a file pathname
dirname [basename] (3) - Parse pathname components
dirs [builtins] (1) - bash built-in commands, see bash(1)
Disclaimer: The functionality of this program is now available in the ntpd program. See the -q command line option in the ntpd [ntpdate] (1) - Network Time Protocol (NTP) daemon page. After a suitable period of mourning, the ntpdate program is to be retired from this distribution
diskdumpctl (8) - diskdump controller
diskdumpfmt (8) - format a dump device or a partition
diskdumputils (rpm) - diskdump 工具。
disown [builtins] (1) - bash built-in commands, see bash(1)
display (1) - displays an image or image sequence on any X server
DisplayCells [AllPlanes] (3x) - Display macros and functions
DisplayHeight [ImageByteOrder] (3x) - image format functions and macros
DisplayHeightMM [ImageByteOrder] (3x) - image format functions and macros
DisplayOfCCC (3x) - Color Conversion Context macros
DisplayOfScreen [BlackPixelOfScreen] (3x) - screen information functions and macros
DisplayPlanes [AllPlanes] (3x) - Display macros and functions
DisplayString [AllPlanes] (3x) - Display macros and functions
DisplayWidth [ImageByteOrder] (3x) - image format functions and macros
DisplayWidthMM [ImageByteOrder] (3x) - image format functions and macros
ditroff (7) - classical device independent roff
div (3) - compute quotient and remainder of an integer division
div (3p) - compute the quotient and remainder of an integer division
djpeg (1) - decompress a JPEG file to an image file
dladdr [dlopen] (3) - programming interface to dynamic linking loader
dlclose (3p) - close a dlopen object
dlclose [dlopen] (3) - programming interface to dynamic linking loader
dlerror (3p) - get diagnostic information
dlerror [dlopen] (3) - programming interface to dynamic linking loader
dlfcn.h [dlfcn] (0p) - dynamic linking
dl_iterate_phdr (3) - walk through list of shared objects
dlopen (3p) - gain access to an executable object file
dlopen (3) - programming interface to dynamic linking loader
dlsym (3p) - obtain the address of a symbol from a dlopen object
dlsym [dlopen] (3) - programming interface to dynamic linking loader
dlvsym [dlopen] (3) - programming interface to dynamic linking loader
dmc (4) - DMC input driver
dmesg (8) - print or control the kernel ring buffer
dmidecode (8) - DMI table decoder
dmidecode (rpm) - 检测 BIOS DMI 数据的工具
dmraid (8) - discover and activate software (ATA)RAID
dmraid (rpm) - dmraid (Device-mapper RAID 工具和库)
dmsetup (8) - low level logical volume management
dn_comp [resolver] (3) - resolver routines
dn_expand [resolver] (3) - resolver routines
dnsdomainname [hostname] (1) - show the system's DNS domain name
docbook2dvi [jw] (1) - (Jade Wrapper) converts SGML files to other formats
docbook2html [jw] (1) - (Jade Wrapper) converts SGML files to other formats
docbook2man [jw] (1) - (Jade Wrapper) converts SGML files to other formats
docbook2man-spec.pl [docbook2man-spec] (1) - convert DocBook RefEntries to man pages
docbook2pdf [jw] (1) - (Jade Wrapper) converts SGML files to other formats
docbook2ps [jw] (1) - (Jade Wrapper) converts SGML files to other formats
docbook2rtf [jw] (1) - (Jade Wrapper) converts SGML files to other formats
docbook2texi [jw] (1) - (Jade Wrapper) converts SGML files to other formats
docbook2texi-spec.pl [docbook2texi-spec] (1) - convert DocBook Booksto Texinfo documents
docbook2tex [jw] (1) - (Jade Wrapper) converts SGML files to other formats
docbook2txt [jw] (1) - (Jade Wrapper) converts SGML files to other formats
docbook-dtds (rpm) - DocBook 4.1.2 的 XML 文档类型定义。
docbook-style-dsssl (rpm) - Norman Walsh 的用于 DocBook 的模块化版式单。
docbook-style-xsl (rpm) - Norman Walsh 的用于 DocBook XML 的 XSL 版式单。
docbook-utils (rpm) - 用来管理 DocBook 文档的 Shell 脚本。
DoesBackingStore [BlackPixelOfScreen] (3x) - screen information functions and macros
DoesSaveUnders [BlackPixelOfScreen] (3x) - screen information functions and macros
doexec (1) - run an executable with an arbitrary argv[0]
domainname [hostname] (1) - show or set the system's NIS/YP domain name
dos2unix (1) - DOS/MAC to UNIX text file format converter
dos2unix [mac2unix] (1) - DOS/MAC to UNIX text file format converter
dos2unix (rpm) - 文本文件格式转换器
dosfsck (8) - check and repair MS-DOS file systems
dosfstools (rpm) - 用于在 Linux 上制作和检查 MS-DOS FAT 文件系统的工具。
dot (1p) - execute commands in the current environment
doupdate [curs_refresh] (3x) - refresh curses windows and lines
doxygen (1) - documentation system for various programming languages
doxygen (rpm) - C/C++ 文档系统。
doxytag (1) - generates a tag file and/or a search index for a set of HTML files
DPMSCapable (3x) - returns the DPMS capability of the X server
DPMSDisable (3x) - disables DPMS on the specified display
DPMSEnable (3x) - enables DPMS on the specified display
DPMSForceLevel (3x) - forces a DPMS capable display into the specified power level
DPMSGetTimeouts (3x) - retrieves the timeout values used by the X server for DPMS timings
DPMSGetVersion (3x) - returns the version of the DPMS extension implemented by the X server
DPMSInfo (3x) - returns information about the current DPMS state
DPMSQueryExtension (3x) - queries the X server to determine the availability of the DPMS Extension
DPMSSetTimeouts (3x) - permits applications to set the timeout values used by the X server for DPMS timings
dprintf (3) - print to a file descriptor
dprofpp (1) - display perl profile data
drand48 (3) - generate uniformly distributed pseudo-random numbers
drand48 (3p) - generate uniformly distributed pseudo-random numbers
drand48_r (3) - generate uniformly distributed pseudo-random numbers reentrantly
dremf [remainder] (3) - floating-point remainder function
dreml [remainder] (3) - floating-point remainder function
drem [remainder] (3) - floating-point remainder function
dsa (1ssl) - DSA key processing
dsa (3ssl) - Digital Signature Algorithm
DSA_do_sign (3ssl) - raw DSA signature operations
DSA_do_verify [DSA_do_sign] (3ssl) - raw DSA signature operations
DSA_dup_DH (3ssl) - create a DH structure out of DSA structure
DSA_free [DSA_new] (3ssl) - allocate and free DSA objects
DSA_generate_key (3ssl) - generate DSA key pair
DSA_generate_parameters (3ssl) - generate DSA parameters
DSA_get_default_method [DSA_set_method] (3ssl) - select DSA method
DSA_get_ex_data [DSA_get_ex_new_index] (3ssl) - add application specific data to DSA structures
DSA_get_ex_new_index (3ssl) - add application specific data to DSA structures
DSA_new (3ssl) - allocate and free DSA objects
DSA_new_method [DSA_set_method] (3ssl) - select DSA method
DSA_OpenSSL [DSA_set_method] (3ssl) - select DSA method
dsaparam (1ssl) - DSA parameter manipulation and generation
DSAparams_print_fp [RSA_print] (3ssl) - print cryptographic parameters
DSAparams_print [RSA_print] (3ssl) - print cryptographic parameters
DSA_print_fp [RSA_print] (3ssl) - print cryptographic parameters
DSA_print [RSA_print] (3ssl) - print cryptographic parameters
DSA_set_default_method [DSA_set_method] (3ssl) - select DSA method
DSA_set_ex_data [DSA_get_ex_new_index] (3ssl) - add application specific data to DSA structures
DSA_set_method (3ssl) - select DSA method
DSA_SIG_free [DSA_SIG_new] (3ssl) - allocate and free DSA signature objects
DSA_sign (3ssl) - DSA signatures
DSA_SIG_new (3ssl) - allocate and free DSA signature objects
DSA_sign_setup [DSA_sign] (3ssl) - DSA signatures
DSA_size (3ssl) - get DSA signature size
DSA_verify [DSA_sign] (3ssl) - DSA signatures
dsp56k (4) - DSP56001 interface device
du (1) - estimate file space usage
du (1p) - estimate file space usage
dump (8) - ext2/3 filesystem backup
dumpe2fs (8) - dump ext2/ext3 filesystem information
dumpiso (1) - dump IEEE 1394 isochronous channel packets
dumpkeys (1) - dump keyboard translation tables
dump (rpm) - Programs for backing up and restoring ext2/ext3 filesystems
Dumpvalue (3pm) - provides screen dump of Perl data
dund (1) - BlueZ Bluetooth dial-up networking daemon
dup2 [dup] (2) - duplicate a file descriptor
dup2 [dup] (3p) - duplicate an open file descriptor
dup (2) - duplicate a file descriptor
dup (3p) - duplicate an open file descriptor
dupwin [curs_window] (3x) - create curses windows
dvcont (1) - send control commands to DV cameras
dvdrecord (1) - record audio or data Compact Discs and DVDs from a master
dvd+rw-tools (rpm) - 使用 Toolchain 管理 DVD+RW/+R
dvipdf (1) - Convert TeX DVI file to PDF using ghostscript and dvips
DynaLoader (3pm) - Dynamically load C libraries into Perl code
dynapro (4) - Dynapro input driver
dysize (3) - get number of days for a given year
d2i_509_CRL_fp [d2i_X509_CRL] (3ssl) - PKCS#10 certificate request functions
d2i_ASN1_OBJECT (3ssl) - ASN1 OBJECT IDENTIFIER functions
d2i_DHparams (3ssl) - PKCS#3 DH parameter functions
d2i_DSAPrivateKey [d2i_DSAPublicKey] (3ssl) - DSA key encoding and parsing functions
d2i_DSA_PUBKEY [d2i_DSAPublicKey] (3ssl) - DSA key encoding and parsing functions
d2i_DSAPublicKey (3ssl) - DSA key encoding and parsing functions
d2i_DSA_SIG [d2i_DSAPublicKey] (3ssl) - DSA key encoding and parsing functions
d2i_Netscape_RSA [d2i_RSAPublicKey] (3ssl) - RSA public and private key encoding functions
d2i_PKCS8PrivateKey_bio [d2i_PKCS8PrivateKey] (3ssl) - PKCS#8 format private key functions
d2i_PKCS8PrivateKey_fp [d2i_PKCS8PrivateKey] (3ssl) - PKCS#8 format private key functions
d2i_RSAPrivateKey [d2i_RSAPublicKey] (3ssl) - RSA public and private key encoding functions
d2i_RSA_PUBKEY [d2i_RSAPublicKey] (3ssl) - RSA public and private key encoding functions
d2i_RSAPublicKey (3ssl) - RSA public and private key encoding functions
d2i_SSL_SESSION (3ssl) - convert SSL_SESSION object from/to ASN1 representation
d2i_X509 (3ssl) - X509 encode and decode functions
d2i_X509_ALGOR (3ssl) - AlgorithmIdentifier functions
d2i_X509_bio [d2i_X509] (3ssl) - X509 encode and decode functions
d2i_X509_CRL (3ssl) - PKCS#10 certificate request functions
d2i_X509_CRL_bio [d2i_X509_CRL] (3ssl) - PKCS#10 certificate request functions
d2i_X509_fp [d2i_X509] (3ssl) - X509 encode and decode functions
d2i_X509_NAME (3ssl) - X509_NAME encoding functions
d2i_X509_REQ (3ssl) - PKCS#10 certificate request functions
d2i_X509_REQ_bio [d2i_X509_REQ] (3ssl) - PKCS#10 certificate request functions
d2i_X509_REQ_fp [d2i_X509_REQ] (3ssl) - PKCS#10 certificate request functions
d2i_X509_SIG (3ssl) - DigestInfo functions
daemon (3) - run in the background
Data::Dumper (3pm) - stringified perl data structures, suitable for both printing and eval
date (1) - print or set the system date and time
date (1p) - write the date and time
daylight [tzset] (3) - initialize time conversion information
daylight [tzset] (3p) - set timezone conversion information
db4-devel (rpm) - 用于 Berkeley DB (版本 4) 库的开发文件。
db4 (rpm) - C 语言的 Berkeley DB 数据库库(版本 4)。
DBE (3x) - Double Buffer Extension
DB_File (3pm) - Perl5 access to Berkeley DB version 1.x
DB_File [AnyDBM_File] (3pm) - various DBM implementations
dbm_clearerr [dbm_open] (3p) - database functions
dbm_close [dbm_open] (3p) - database functions
dbm_delete [dbm_open] (3p) - database functions
dbm_error [dbm_open] (3p) - database functions
dbm_fetch [dbm_open] (3p) - database functions
dbm_firstkey [dbm_open] (3p) - database functions
dbm_nextkey [dbm_open] (3p) - database functions
dbm_open (3p) - database functions
dbm_store [dbm_open] (3p) - database functions
dbus-cleanup-sockets (1) - clean up leftover sockets in a directory
dbus-daemon (1) - Message bus daemon
dbus-devel (rpm) - 用于 D-BUS 的库和头文件。
dbus-glib-devel (rpm) - Libraries and headers for the D-Bus GLib bindings
dbus-glib (rpm) - GLib bindings for D-Bus
dbus-launch (1) - Utility to start a message bus from a shell script
dbus-monitor (1) - debug probe to print message bus messages
dbus-python (rpm) - D-Bus Python Bindings
dbus (rpm) - D-BUS 信息总线
dbus-send (1) - Send a message to a message bus
dbus-x11 (rpm) - X11 所需的 D-BUS 插件
dc (1) - an arbitrary precision calculator
dcraw (1) - command-line decoder for raw digital photos
dcraw (rpm) - 从数码相机中解读原始图像数据的工具
dd (1) - convert and copy a file
dd (1p) - convert and copy a file
ddate (1) - converts Gregorian dates to Discordian dates
ddbugtopbm (1) - convert Diddle or DiddleBug sketches to PBM files
ddp (7) - Linux AppleTalk protocol implementation
deallocvt (1) - deallocate unused virtual consoles
debugfs (8) - ext2/ext3 file system debugger
declare [builtins] (1) - bash built-in commands, see bash(1)
DefaultColormap [AllPlanes] (3x) - Display macros and functions
DefaultColormapOfScreen [BlackPixelOfScreen] (3x) - screen information functions and macros
DefaultDepth [AllPlanes] (3x) - Display macros and functions
DefaultDepthOfScreen [BlackPixelOfScreen] (3x) - screen information functions and macros
DefaultGC [AllPlanes] (3x) - Display macros and functions
DefaultGCOfScreen [BlackPixelOfScreen] (3x) - screen information functions and macros
DefaultRootWindow [AllPlanes] (3x) - Display macros and functions
DefaultScreen [AllPlanes] (3x) - Display macros and functions
DefaultScreenOfDisplay [AllPlanes] (3x) - Display macros and functions
DefaultVisual [AllPlanes] (3x) - Display macros and functions
DefaultVisualOfScreen [BlackPixelOfScreen] (3x) - screen information functions and macros
define_key (3x) - define a keycode
def_prog_mode [curs_kernel] (3x) - low-level curses routines
def_shell_mode [curs_kernel] (3x) - low-level curses routines
dehtmldiff (1) - get usable diff from an HTML page
dejavu-lgc-fonts (rpm) - DejaVu LGC Fonts
delay_output [curs_util] (3x) - miscellaneous curses utility routines
delch [curs_delch] (3x) - delete character under the cursor in a curses window
del_curterm [curs_terminfo] (3x) - curses interfaces to terminfo database
deleteln [curs_deleteln] (3x) - delete and insert lines in a curses window
delete_module (2) - Delete a loadable module
delscreen [curs_initscr] (3x) - curses screen initialization and manipulation routines
delta (1p) - make a delta (change) to an SCCS file (DEVELOPMENT)
delwin [curs_window] (3x) - create curses windows
depmod (8) - program to generate modules.dep and map files
derwin [curs_window] (3x) - create curses windows
DES_cbc_cksum [des] (3ssl) - DES encryption
DES_cfb64_encrypt [des] (3ssl) - DES encryption
DES_cfb_encrypt [des] (3ssl) - DES encryption
des_crypt (3) - fast DES encryption
DES_crypt [des] (3ssl) - DES encryption
DES_ecb2_encrypt [des] (3ssl) - DES encryption
DES_ecb3_encrypt [des] (3ssl) - DES encryption
DES_ecb_encrypt [des] (3ssl) - DES encryption
DES_ede2_cbc_encrypt [des] (3ssl) - DES encryption
DES_ede2_cfb64_encrypt [des] (3ssl) - DES encryption
DES_ede2_ofb64_encrypt [des] (3ssl) - DES encryption
DES_ede3_cbc_encrypt [des] (3ssl) - DES encryption
DES_ede3_cbcm_encrypt [des] (3ssl) - DES encryption
DES_ede3_cfb64_encrypt [des] (3ssl) - DES encryption
DES_ede3_ofb64_encrypt [des] (3ssl) - DES encryption
DES_enc_read [des] (3ssl) - DES encryption
DES_enc_write [des] (3ssl) - DES encryption
DES_FAILED [des_crypt] (3) - fast DES encryption
DES_fcrypt [des] (3ssl) - DES encryption
DES_is_weak_key [des] (3ssl) - DES encryption
DES_key_sched [des] (3ssl) - DES encryption
desktop-backgrounds-basic (rpm) - 桌面背景基础集合。
desktop-file-utils (rpm) - 用来操作 .desktop 的工具程序
desktop-printing (rpm) - 桌面打印图标
DES_ncbc_encrypt [des] (3ssl) - DES encryption
DES_ofb64_encrypt [des] (3ssl) - DES encryption
DES_ofb_encrypt [des] (3ssl) - DES encryption
DES_pcbc_encrypt [des] (3ssl) - DES encryption
DES_quad_cksum [des] (3ssl) - DES encryption
DES_random_key [des] (3ssl) - DES encryption
des_read_2passwords [ui_compat] (3ssl) - Compatibility user interface functions
des_read_password [ui_compat] (3ssl) - Compatibility user interface functions
des_read_pw_string [ui_compat] (3ssl) - Compatibility user interface functions
des_read_pw [ui_compat] (3ssl) - Compatibility user interface functions
DES_set_key_checked [des] (3ssl) - DES encryption
DES_set_key [des] (3ssl) - DES encryption
DES_set_key_unchecked [des] (3ssl) - DES encryption
DES_set_odd_parity [des] (3ssl) - DES encryption
des_setparity [des_crypt] (3) - fast DES encryption
DES_string_to_2keys [des] (3ssl) - DES encryption
DES_string_to_key [des] (3ssl) - DES encryption
DES_xcbc_encrypt [des] (3ssl) - DES encryption
devdump [isoinfo] (8) - Utility programs for dumping and verifying iso9660 images
Devel::DProf (3pm) - a Perl code profiler
Devel::Peek (3pm) - A data debugging tool for the XS programmer
Devel::PPPort (3pm) - Perl/Pollution/Portability
Devel::SelfStubber (3pm) - generate stubs for a SelfLoading module
devhelp (rpm) - API 文档浏览器。
device-mapper-multipath (rpm) - 用 device-mapper 管理多路径设备的工具。
device-mapper (rpm) - device mapper 库
dev_lock [lockdev] (3) - manage device lockfiles
dev_relock [lockdev] (3) - manage device lockfiles
dev_testlock [lockdev] (3) - manage device lockfiles
dev_unlock [lockdev] (3) - manage device lockfiles
df (1p) - report free disk space
df (1) - report file system disk space usage
dfutool (1) - Device Firmware Upgrade utility
dgst (1ssl) - message digests
dh (3ssl) - Diffie-Hellman key agreement
dhcdbd (rpm) - DHCP D-BUS deamon (dhcdbd) 使用 D-BUS 控制 dhclient 客户端程序，保存并显示 DHCP 选项。
DH_check [DH_generate_parameters] (3ssl) - generate and check Diffie-Hellman parameters
dhclient (8) - Dynamic Host Configuration Protocol Client
dhclient.conf [dhclient] (5) - DHCP client configuration file
dhclient.leases [dhclient] (5) - DHCP client lease database
dhclient (rpm) - 提供 dhclient ISC DHCP 客户端守护进程和 dhclient 脚本。
dhclient-script (8) - DHCP client network configuration script
DH_compute_key [DH_generate_key] (3ssl) - perform Diffie-Hellman key exchange
dhcp6c (8) - DHCPv6 client daemon
dhcp6c.conf [dhcp6c] (5) - configuration file of the DHCPv6 client daemon, dhcp6c
dhcp-eval [dhclient-eval] (5) - ISC DHCP conditional evaluation
dhcp-options [dhclient-options] (5) - Dynamic Host Configuration Protocol options
dhcpv6_client (rpm) - DHCPv6 客户
DH_free [DH_new] (3ssl) - allocate and free DH objects
DH_generate_key (3ssl) - perform Diffie-Hellman key exchange
DH_generate_parameters (3ssl) - generate and check Diffie-Hellman parameters
DH_get_default_method [DH_set_method] (3ssl) - select DH method
DH_get_ex_data [DH_get_ex_new_index] (3ssl) - add application specific data to DH structures
DH_get_ex_new_index (3ssl) - add application specific data to DH structures
DH_new (3ssl) - allocate and free DH objects
DH_new_method [DH_set_method] (3ssl) - select DH method
DH_OpenSSL [DH_set_method] (3ssl) - select DH method
dhparam (1ssl) - DH parameter manipulation and generation
DHparams_print_fp [RSA_print] (3ssl) - print cryptographic parameters
DHparams_print [RSA_print] (3ssl) - print cryptographic parameters
DH_set_default_method [DH_set_method] (3ssl) - select DH method
DH_set_ex_data [DH_get_ex_new_index] (3ssl) - add application specific data to DH structures
DH_set_method (3ssl) - select DH method
DH_size (3ssl) - get Diffie-Hellman prime size
diagnostics (3pm) - produce verbose warning diagnostics
diagnostics [splain] (1) - produce verbose warning diagnostics
diff (1) - find differences between two files
diff (1p) - compare two files
diff3 (1) - find differences between three files
diffpp (1) - pretty-print diff outputs with GNU enscript
diffstat (1) - make histogram from diff-output
diffstat (rpm) - 基于 diff 命令输出来提供统计的工具。
difftime (3) - calculate time difference
difftime (3p) - compute the difference between two calendar time values
diffutils (rpm) - diff 工具的 GNU 集合。
dig (1) - DNS lookup utility
Digest (3pm) - Modules that calculate message digests
Digest::base (3pm) - Digest base class
Digest::file (3pm) - Calculate digests of files
Digest::HMAC (3pm) - Keyed-Hashing for Message Authentication
Digest::HMAC_MD5 (3pm) - Keyed-Hashing for Message Authentication
Digest::HMAC_SHA1 (3pm) - Keyed-Hashing for Message Authentication
Digest::MD5 (3pm) - Perl interface to the MD5 Algorithm
Digest::SHA1 (3pm) - Perl interface to the SHA-1 algorithm
dir (1) - list directory contents
dircolors (1) - color setup for ls
dir_colors (5) - configuration file for dircolors(1)
dirent.h [dirent] (0p) - format of directory entries
dirfd (3) - get directory stream file descriptor
DirHandle (3pm) - supply object methods for directory handles
dirname (1p) - return the directory portion of a pathname
dirname (1) - strip non-directory suffix from file name
dirname (3p) - report the parent directory name of a file pathname
dirname [basename] (3) - Parse pathname components
dirs [builtins] (1) - bash built-in commands, see bash(1)
Disclaimer: The functionality of this program is now available in the ntpd program. See the -q command line option in the ntpd [ntpdate] (1) - Network Time Protocol (NTP) daemon page. After a suitable period of mourning, the ntpdate program is to be retired from this distribution
diskdumpctl (8) - diskdump controller
diskdumpfmt (8) - format a dump device or a partition
diskdumputils (rpm) - diskdump 工具。
disown [builtins] (1) - bash built-in commands, see bash(1)
display (1) - displays an image or image sequence on any X server
DisplayCells [AllPlanes] (3x) - Display macros and functions
DisplayHeight [ImageByteOrder] (3x) - image format functions and macros
DisplayHeightMM [ImageByteOrder] (3x) - image format functions and macros
DisplayOfCCC (3x) - Color Conversion Context macros
DisplayOfScreen [BlackPixelOfScreen] (3x) - screen information functions and macros
DisplayPlanes [AllPlanes] (3x) - Display macros and functions
DisplayString [AllPlanes] (3x) - Display macros and functions
DisplayWidth [ImageByteOrder] (3x) - image format functions and macros
DisplayWidthMM [ImageByteOrder] (3x) - image format functions and macros
ditroff (7) - classical device independent roff
div (3) - compute quotient and remainder of an integer division
div (3p) - compute the quotient and remainder of an integer division
djpeg (1) - decompress a JPEG file to an image file
dladdr [dlopen] (3) - programming interface to dynamic linking loader
dlclose (3p) - close a dlopen object
dlclose [dlopen] (3) - programming interface to dynamic linking loader
dlerror (3p) - get diagnostic information
dlerror [dlopen] (3) - programming interface to dynamic linking loader
dlfcn.h [dlfcn] (0p) - dynamic linking
dl_iterate_phdr (3) - walk through list of shared objects
dlopen (3p) - gain access to an executable object file
dlopen (3) - programming interface to dynamic linking loader
dlsym (3p) - obtain the address of a symbol from a dlopen object
dlsym [dlopen] (3) - programming interface to dynamic linking loader
dlvsym [dlopen] (3) - programming interface to dynamic linking loader
dmc (4) - DMC input driver
dmesg (8) - print or control the kernel ring buffer
dmidecode (8) - DMI table decoder
dmidecode (rpm) - 检测 BIOS DMI 数据的工具
dmraid (8) - discover and activate software (ATA)RAID
dmraid (rpm) - dmraid (Device-mapper RAID 工具和库)
dmsetup (8) - low level logical volume management
dn_comp [resolver] (3) - resolver routines
dn_expand [resolver] (3) - resolver routines
dnsdomainname [hostname] (1) - show the system's DNS domain name
docbook2dvi [jw] (1) - (Jade Wrapper) converts SGML files to other formats
docbook2html [jw] (1) - (Jade Wrapper) converts SGML files to other formats
docbook2man [jw] (1) - (Jade Wrapper) converts SGML files to other formats
docbook2man-spec.pl [docbook2man-spec] (1) - convert DocBook RefEntries to man pages
docbook2pdf [jw] (1) - (Jade Wrapper) converts SGML files to other formats
docbook2ps [jw] (1) - (Jade Wrapper) converts SGML files to other formats
docbook2rtf [jw] (1) - (Jade Wrapper) converts SGML files to other formats
docbook2texi [jw] (1) - (Jade Wrapper) converts SGML files to other formats
docbook2texi-spec.pl [docbook2texi-spec] (1) - convert DocBook Booksto Texinfo documents
docbook2tex [jw] (1) - (Jade Wrapper) converts SGML files to other formats
docbook2txt [jw] (1) - (Jade Wrapper) converts SGML files to other formats
docbook-dtds (rpm) - DocBook 4.1.2 的 XML 文档类型定义。
docbook-style-dsssl (rpm) - Norman Walsh 的用于 DocBook 的模块化版式单。
docbook-style-xsl (rpm) - Norman Walsh 的用于 DocBook XML 的 XSL 版式单。
docbook-utils (rpm) - 用来管理 DocBook 文档的 Shell 脚本。
DoesBackingStore [BlackPixelOfScreen] (3x) - screen information functions and macros
DoesSaveUnders [BlackPixelOfScreen] (3x) - screen information functions and macros
doexec (1) - run an executable with an arbitrary argv[0]
domainname [hostname] (1) - show or set the system's NIS/YP domain name
dos2unix (1) - DOS/MAC to UNIX text file format converter
dos2unix [mac2unix] (1) - DOS/MAC to UNIX text file format converter
dos2unix (rpm) - 文本文件格式转换器
dosfsck (8) - check and repair MS-DOS file systems
dosfstools (rpm) - 用于在 Linux 上制作和检查 MS-DOS FAT 文件系统的工具。
dot (1p) - execute commands in the current environment
doupdate [curs_refresh] (3x) - refresh curses windows and lines
doxygen (1) - documentation system for various programming languages
doxygen (rpm) - C/C++ 文档系统。
doxytag (1) - generates a tag file and/or a search index for a set of HTML files
DPMSCapable (3x) - returns the DPMS capability of the X server
DPMSDisable (3x) - disables DPMS on the specified display
DPMSEnable (3x) - enables DPMS on the specified display
DPMSForceLevel (3x) - forces a DPMS capable display into the specified power level
DPMSGetTimeouts (3x) - retrieves the timeout values used by the X server for DPMS timings
DPMSGetVersion (3x) - returns the version of the DPMS extension implemented by the X server
DPMSInfo (3x) - returns information about the current DPMS state
DPMSQueryExtension (3x) - queries the X server to determine the availability of the DPMS Extension
DPMSSetTimeouts (3x) - permits applications to set the timeout values used by the X server for DPMS timings
dprintf (3) - print to a file descriptor
dprofpp (1) - display perl profile data
drand48 (3) - generate uniformly distributed pseudo-random numbers
drand48 (3p) - generate uniformly distributed pseudo-random numbers
drand48_r (3) - generate uniformly distributed pseudo-random numbers reentrantly
dremf [remainder] (3) - floating-point remainder function
dreml [remainder] (3) - floating-point remainder function
drem [remainder] (3) - floating-point remainder function
dsa (1ssl) - DSA key processing
dsa (3ssl) - Digital Signature Algorithm
DSA_do_sign (3ssl) - raw DSA signature operations
DSA_do_verify [DSA_do_sign] (3ssl) - raw DSA signature operations
DSA_dup_DH (3ssl) - create a DH structure out of DSA structure
DSA_free [DSA_new] (3ssl) - allocate and free DSA objects
DSA_generate_key (3ssl) - generate DSA key pair
DSA_generate_parameters (3ssl) - generate DSA parameters
DSA_get_default_method [DSA_set_method] (3ssl) - select DSA method
DSA_get_ex_data [DSA_get_ex_new_index] (3ssl) - add application specific data to DSA structures
DSA_get_ex_new_index (3ssl) - add application specific data to DSA structures
DSA_new (3ssl) - allocate and free DSA objects
DSA_new_method [DSA_set_method] (3ssl) - select DSA method
DSA_OpenSSL [DSA_set_method] (3ssl) - select DSA method
dsaparam (1ssl) - DSA parameter manipulation and generation
DSAparams_print_fp [RSA_print] (3ssl) - print cryptographic parameters
DSAparams_print [RSA_print] (3ssl) - print cryptographic parameters
DSA_print_fp [RSA_print] (3ssl) - print cryptographic parameters
DSA_print [RSA_print] (3ssl) - print cryptographic parameters
DSA_set_default_method [DSA_set_method] (3ssl) - select DSA method
DSA_set_ex_data [DSA_get_ex_new_index] (3ssl) - add application specific data to DSA structures
DSA_set_method (3ssl) - select DSA method
DSA_SIG_free [DSA_SIG_new] (3ssl) - allocate and free DSA signature objects
DSA_sign (3ssl) - DSA signatures
DSA_SIG_new (3ssl) - allocate and free DSA signature objects
DSA_sign_setup [DSA_sign] (3ssl) - DSA signatures
DSA_size (3ssl) - get DSA signature size
DSA_verify [DSA_sign] (3ssl) - DSA signatures
dsp56k (4) - DSP56001 interface device
du (1) - estimate file space usage
du (1p) - estimate file space usage
dump (8) - ext2/3 filesystem backup
dumpe2fs (8) - dump ext2/ext3 filesystem information
dumpiso (1) - dump IEEE 1394 isochronous channel packets
dumpkeys (1) - dump keyboard translation tables
dump (rpm) - Programs for backing up and restoring ext2/ext3 filesystems
Dumpvalue (3pm) - provides screen dump of Perl data
dund (1) - BlueZ Bluetooth dial-up networking daemon
dup2 [dup] (2) - duplicate a file descriptor
dup2 [dup] (3p) - duplicate an open file descriptor
dup (2) - duplicate a file descriptor
dup (3p) - duplicate an open file descriptor
dupwin [curs_window] (3x) - create curses windows
dvcont (1) - send control commands to DV cameras
dvdrecord (1) - record audio or data Compact Discs and DVDs from a master
dvd+rw-tools (rpm) - 使用 Toolchain 管理 DVD+RW/+R
dvipdf (1) - Convert TeX DVI file to PDF using ghostscript and dvips
DynaLoader (3pm) - Dynamically load C libraries into Perl code
dynapro (4) - Dynapro input driver
dysize (3) - get number of days for a given year
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