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http://219.219.90.5/zm/%E8%AF%BE%E7%A8%8B%E8%AF%BE%E4%BB%B6/%E3%80%8APowerBuilder%E5%9B%BE%E8%A7%A3%E6%95%99%E7%A8%8B%E3%80%8B/index.htmhttp://www.bccn.net/Article/sjk/pb/jc/(编程中国) 阅读全文
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http://linux.about.com/library/cmd/blcmdln_expr.htmNAMEexpr - Evaluate an expression SYNOPSISexpr arg ?arg arg ...? DESCRIPTIONConcatenates arg's (adding separator spaces between them), evaluates the result as a Tcl expression, and returns the value. The operators permitted in Tcl expressions ar 阅读全文
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http://download.oracle.com/docs/cd/B28359_01/server.111/b28319/ldr_concepts.htm#SUTIL003Beloware the main steps of an example:step 1: prepare the test table(you arerecommend to make a sql file to store the ddl to create a table) create tableSAMPLE ( NAME INTEGER)step 2: prepare data files and contro 阅读全文
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Linux internal commands Linux commands Linux commands are nothing but the text written in the shell or terminal that the terminal understands. Linux commands usually performs certain specific operations such as editing a text file, making, removing and moving a directory etc. The shell or the term.. 阅读全文
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1、先解除root锁定，为root用户设置密码 打开终端输入：sudo passwd rootPassword: <--- 输入你当前用户的密码 Enter new UNIX password: <--- 新的Root用户密码 Retype new UNIX password: <--- 重复新的Root用户密码 passwd：已成功更新密码 2、更改登陆，允许root登录 打开 系统＞系统管理＞登录窗口） 点“安全”选项页，选择“允许本地管理员登录”。 3、注销当前用户，以root登陆 change user:su [username]query user:whoami 阅读全文
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http://dos.rsvs.net/DOSPAGE/DOS_IC.HTM （dos internal command）http://www.computerhope.com/jargon/e/extecomm.htm(dos external command) 阅读全文
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http://www.panix.com/~elflord/unix/grep.htmlWhy grep ?Back to top grep is not only one of the most useful commands, but also, mastery of grep opens the gates to mastery of other tools such as awk , sed and perl . So what does it do ?Back to top grep basically searches. More precisely, grep foo file 阅读全文