How can I make environment variables exported in a shell script stick
How can I make environment variables exported in a shell script stick around Ask ion Asked 11 years 10 months ago Modified 3 years 8 months ago Viewed 146k times 92 I have multiple Amazon EC2 accounts and want to quickly be able to switch variables such as EC2 HOME using a script I have have a shell script set up like this
Global environment variables in a shell script Stack Overflow, 7 Answers Sorted by 164 Run your script with myscript sh This will run the script in the current shell environment export governs which variables will be available to new processes so if you say FOO 1 export BAR 2 runScript sh then BAR will be available in the environment of runScript sh but FOO will not Share Follow
Shell script to set environment variables Stack Overflow
5 Answers Sorted by 320 You need to run the script as source or the shorthand source myscript sh or myscript sh This will run within the existing shell ensuring any variables created or modified by the script will be available after the script completes Running the script just using the filename will execute the script in a
Linux export Command with Examples phoenixNAP, The export command is a built in Bash shell command that exports environmental variables as child processes without affecting the existing environment variables Local shell variables are known only to the shell that created them and starting a new shell session means that previously created variables are unknown to it
Bash Scripts Set Environmental Variables with EXPORT HowTo LinuxScrew
Bash Scripts Set Environmental Variables with EXPORT HowTo LinuxScrew, Env Set Environmental Variables with export The following script testScript sh sets an environmental variable and then exits bin bash export MY ENV VAR Save the environment Now when the above script is executed sh testScript sh The variable MY ENV VAR is available after it has been completed This can be confirmed by running
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How to Export Environment Variables With Bash 4 Examples
How to Export Environment Variables With Bash 4 Examples When a variable is exported the variable is considered to be set and its value can be accessed by other scripts programs and child processes spawned from the current shell session Moreover it allows for sharing of data between different parts of a script and enables communication between the parent shell and its subprocesses
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Environment variables defined with export are like global variables that we can access within the defining shell and all its child shells processes and commands However if we compare bash environment variables to programming language global variables there s one main distinction Defining a Bash Variable With or Without export Baeldung. To set an environment variable once use the export command in the prompt not in a shell script export THEVAR example The variable will be set for the rest of the shell session or until unset To set an environment variable everytime use the export command in the bashrc file or the appropriate initialization file for your shell To set Let s get started Export Command and Shell Environment To understand what the export command does I first want to explain the concept of environment variables in Linux Environment variables are variables that your Linux system needs to provide configuration settings required by the shell to execute commands
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