Set environment variables in a specific directory
This is a .bashrc question. I would like to set "export FOO=bar"
for .bashrc in a specific directory eg .rvmrc
.
I tried below.
$ touch ~/foo/.bashrc
$ echo 'export RAILS_ENV=development' >> ~/foo/.bashrc
$ cd foo/
$ env|grep RAILS_ENV
But RAILS_ENV
in this case, nothing will be asked.
If I put on .rvmrc
instead of .bashrc it gets through! But it's better to install on .bashrc
because I don't need to install the rvm environment.
Any solutions?
source to share
in your bashrc set this:
PROMPT_COMMAND='[[ $PWD == "/foo/bar/" ]] && export FOO=BAR || unset FOO'
The contents of the PROMPT_COMMAND variable will be executed every time your prompt is rewritten (just before it is actually written), the above command checks the $ PWD variable (which contains your shell's current working directory) against "/ foo / bar" if it matches it, exports your variable, if it hasn't changed, the variable is not set.
E.G.
peteches@yog-sothoth$ PROMPT_COMMAND='[[ $PWD == "/home/peteches/test" ]] && export FOO=BAR || unset FOO'
peteches@yog-sothoth$ pwd
/home/peteches
peteches@yog-sothoth$ cd test
peteches@yog-sothoth$ pwd
/home/peteches/test
peteches@yog-sothoth$ env | grep FOO
6:FOO=BAR
73:PROMPT_COMMAND=[[ $PWD == "/home/peteches/test" ]] && export FOO=BAR || unset FOO
peteches@yog-sothoth$ cd ../
peteches@yog-sothoth$ pwd
/home/peteches
peteches@yog-sothoth$ env | grep FOO
72:PROMPT_COMMAND=[[ $PWD == "/home/peteches/test" ]] && export FOO=BAR || unset FOO
peteches@yog-sothoth$
source to share
If you don't mind using a workaround add it to your .bash_profile
mycd()
{
cd $1
if [ "$(pwd)" == "/your/folder/that/needs/env" ]; then
export RAILS_ENV=development
else
export RAILS_ENV=
fi;
}
alias cd=mycd
Every time you go to a specific folder, this sets your env variable or whatever you want.
source to share