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How can I keep the environment variables, set from a shell script, after the script finishes running?
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You can set an environment variable permanently by placing an export command in your Bash shell's startup script " ~/. bashrc " (or "~/. bash_profile ", or " ~/. profile ") of your home directory; or " /etc/profile " for system-wide operations.
To summarize, if you want to set it in current session, then you can do so from the terminal. If you want it to be permanent for a given user, then set it in . bashrc file for that user. If you want to set the variable globally for all users, on a permanent basis, then add it to /etc/environment file.
To store the output of a command in a variable, you can use the shell command substitution feature in the forms below: variable_name=$(command) variable_name=$(command [option ...] arg1 arg2 ...) OR variable_name='command' variable_name='command [option ...]
This is not possible by running the script. The script spawns it's own sub-shell which is lost when the script completes.
In order to preserve exports that you may have in your script, call it
. myScript.sh
source myScript.sh
Notice the space between the . and myScript.sh; also note that "source is a synonym for . in Bash, but not in POSIX sh, so for maximum compatibility use the period."
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