printenv命令来自英文词组“print environment”的缩写,其功能是用于显示系统环境变量与值。Linux系统中的环境变量多达几十个,在它们的共同协作下才有了用户的工作界面,例如PATH变量让命令得以被运行了、MAIL变量让邮件能够被接收了、HOME变量让用户有了家目录等。 语法格式:printenv [参数] [变量名] 常用参数: --...
Utilizing the printenv command to print each environment variable available in the current shell Using echo Command If you've been using Linux for a while, the chances of using this method to print environment variables are quite high (even if you were unaware that it's not an environment va...
[root@linuxcool ~]#printenv PATH/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/root/bin 显示命令的帮助信息: [root@linuxcool ~]#printenv --helpUsage: printenv [OPTION]... [VARIABLE]... Print the values of the specified environment VARIABLE(s). If no VARIABLE is specified, prin...
PRINTENV(1) User Commands PRINTENV(1) NAME printenv - print all or part of environment SYNOPSIS printenv [VARIABLE]... printenv OPTION DESCRIPTION Print the values of the specified environment VARIABLE(s). If no VARIABLE is specified, print name and value pairs for them all. --help displa...
Environment variables are a collection of dynamic specified values kept inside the machine that has been utilized by programs running in terminals or subshells in Ubuntu and Linux platforms. The environment variable, in basic terms, is an attribute with a title and a value. Environment variables ...
printenv [OPTION]... [VARIABLE]... DESCRIPTION Print the values of the specified environment VARIABLE(s). If no VARIABLE is specified, print name and value pairs for them all. -0,--nullendeach outputlinewithNUL,notnewline--help display this help and exit--versionoutput version information...
It returns a string value of the given environment variable. Output: Output 1 2 3 Windows_NT Note: The environment variable names in Windows are not case-sensitive. But, they are case-sensitive in Linux and macOS. Print Values of Environment Variables using Get-ChildItem Another method to...
Print the values of the specified environment VARIABLE(s). If no VARIABLE is specified, print name and value pairs for them all. -0, --null end each output line with 0 byte rather than newline --help display this help and exit --v
You can append a variable name as a parameter, to only show that variable value:printenv PATH The printenv command works on Linux, macOS, WSL, and anywhere you have a UNIX environmentWritten on Oct 18, 2020 → Get my Linux Command Line Handbook → I wrote 17 books to help you ...
我想在net-ssh start中设置Linux环境变量,并在我的代码中进一步使用它们。但我正在失去变量的范围。你能告诉我如何才能做到这一点吗? 我使用net-ssh并通过rsa密钥登录Linux。('setenv SYBASE /opt/sybase &&printenv') ### Can See environment variable SYBASEputs "*('printenv') ### L 浏览...