The LOGNAME is automatically set for you as the same as your login name. This variable is used in case you want to use your own login name in any script. This is the simplest way of getting your login name from within a script. Thus in case you use $LOGNAME in any script the scrip...
To create a new environment variable, you can use the export command. There are multiple ways to create an environment variable. You can define the variable first and then export it. We will create the variable named EDITOR with the value nano (text editor) and then export it. $EDITOR=nan...
The variable $name is now in the environment list of variables and can be accessed by other processes. For example, it can be used by a PHP script: <?php echo $_SERVER['name'];?> When running on the command line (using: php script.php) you will see that PHP will now print “My...
在终端上执行 help export 可以查看 Bash 内置命令 export 的帮助文档: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 # helpexportexport:export[-fn][name[=value]...]orexport-p Setexportattributeforshell variables.Marks eachNAMEforautomaticexportto the environmentofsubsequently executed commands.IfVA...
/bin/bash## Name: test-bucket-1## Purpose:# Performs the test-bucket number 1 for Product X.# (Actually, this is a sample shell script,# which invokes some system commands# to illustrate how to construct a Bash script)## Notes:# 1) The environment variable TEST_VAR must be set# (...
$ export VARIABLE=somethingTo make sure it was set, type$ $VARIABLEIf you edit a dot file, to apply the changes to the current shell use source .dotfile.This works for Bash and Zsh.With Fish you prepend env:env API_KEY=123123 node app.js...
Use the if-else statement with the -v option to check if an environment variable is set in bash. The echo command in the if block will be executed if the will
If the environment variable $XDG_CONFIG_HOME is present, it will place the nvm files there. You can add --no-use to the end of the above script to postpone using nvm until you manually use it:export NVM_DIR="$([ -z "${XDG_CONFIG_HOME-}" ] && printf %s "${HOME}/.nvm" ||...
ShellCheck - A shell script static analysis tool ShellCheck is a GPLv3 tool that gives warnings and suggestions for bash/sh shell scripts: The goals of ShellCheck are To point out and clarify typical beginner's syntax issues that cause a shell to give cryptic error messages. ...
If the environment variable $XDG_CONFIG_HOME is present, it will place the nvm files there. You can add --no-use to the end of the above script (...nvm.sh --no-use) to postpone using nvm until you manually use it. You can customize the install source, directory, profile, and ...