GO语言常用标准库02---os包
package main import ( "fmt" "os" ) func main() { //获得当前工作路径(当前工程根目录) dir, err := os.Getwd() fmt.Println(dir,err) //获得任意环境变量 pathValue := os.Getenv("Path") //pathValue := os.Getenv("shit")//空字符串 fmt.Println(pathValue) //获得全部环境变量 environ := os.Environ() fmt.Println(environ) //打印当前设备在网络中的主机名 name, err := os.Hostname() fmt.Println(name,err) //获取当前用户的临时文件夹位置 temporaryDirectory := os.TempDir() fmt.Println("劳资的临时文件夹是",temporaryDirectory) //在windows下,顺斜线“/”和反斜线“\”都是合法的路径分隔符,而在Linux下只认“/” fmt.Println(os.IsPathSeparator('/')) fmt.Println(os.IsPathSeparator('\\')) fileInfo, err := os.Stat("F:/BlockChain/code/W2/day2/新建文本文档.txt") fmt.Println(fileInfo,err) fmt.Println(fileInfo.IsDir())//false 该文件不是文件夹 fmt.Println(fileInfo.Name())//新建文本文档 (2).txt fmt.Println(fileInfo.Size())//6 内容大小是6字节 fmt.Println(fileInfo.Mode())//-rw-rw-rw- 文件主人-主人同组用户-其他人的访问权限 fmt.Println(fileInfo.ModTime())//2018-12-25 08:53:58.54 +0800 CST 文件最后修改时间 }
输出:
F:\BlockChain\code <nil> C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;D:\python3.5\python.exe;D:\python3.5\;D:\Git\cmd;D:\go\bin;;%GOPATH%\bin;D:\go\bin [=::=::\ ALLUSERSPROFILE=C:\ProgramData APPDATA=C:\Users\Administrator\AppData\Roaming asl.log=Destination=file CommonProgramFiles=C:\Program Files\Common Files CommonProgramFiles(x86)=C:\Program Files (x86)\Common Files CommonProgramW6432=C:\Program Files\Common Files COMPUTERNAME=PC-20140101MYSM ComSpec=C:\Windows\system32\cmd.exe FP_NO_HOST_CHECK=NO GOPATH=F:\BlockChain\code\W1\day4\ourmath;D:\go GOROOT=D:\Go HOMEDRIVE=C: HOMEPATH=\Users\Administrator LOCALAPPDATA=C:\Users\Administrator\AppData\Local LOGONSERVER=\\PC-20140101MYSM NUMBER_OF_PROCESSORS=8 OS=Windows_NT Path=C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;D:\python3.5\python.exe;D:\python3.5\;D:\Git\cmd;D:\go\bin;;%GOPATH%\bin;D:\go\bin PATHEXT=.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC PROCESSOR_ARCHITECTURE=AMD64 PROCESSOR_IDENTIFIER=Intel64 Family 6 Model 94 Stepping 3, GenuineIntel PROCESSOR_LEVEL=6 PROCESSOR_REVISION=5e03 ProgramData=C:\ProgramData ProgramFiles=C:\Program Files ProgramFiles(x86)=C:\Program Files (x86) ProgramW6432=C:\Program Files PSModulePath=C:\Windows\system32\WindowsPowerShell\v1.0\Modules\ PUBLIC=C:\Users\Public SESSIONNAME=Console SystemDrive=C: SystemRoot=C:\Windows TEMP=C:\Users\ADMINI~1\AppData\Local\Temp TMP=C:\Users\ADMINI~1\AppData\Local\Temp USERDOMAIN=PC-20140101MYSM USERNAME=Administrator USERPROFILE=C:\Users\Administrator windir=C:\Windows windows_tracing_flags=3 windows_tracing_logfile=C:\BVTBin\Tests\installpackage\csilogfile.log _DFX_INSTALL_UNSIGNED_DRIVER=1] PC-20140101MYSM <nil> 劳资的临时文件夹是 C:\Users\ADMINI~1\AppData\Local\Temp true true &{新建文本文档.txt 32 {108929552 30775863} {108929552 30775863} {108929552 30775863} 0 0 0 0 {0 0} F:/BlockChain/code/W2/day2/新建文本文档.txt 0 0 0 false} <nil> false 新建文本文档.txt 0 -rw-rw-rw- 2019-11-13 23:28:40.0106 +0800 CST