linux variables
To set variable only for current shell:
VARNAME="my value"
To set it for current shell and all processes started from current shell:
export VARNAME="my value" # shorter, less portable version
To set it permanently for all future bash sessions add such line to your
.bashrc
file in your $HOME
directory.
To set it permanently, and system wide (all users, all processes) add set variable in /etc/environment:
gksudo gedit /etc/environment
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