I need a fresh temporary directory to do some work in a shell script. When the work is done (or if I kill the job midway), I want the script to change back to the old working directory and wipe out the temporary one. In Ruby, it might look like this:
require 'tmpdir'
Dir.mktmpdir 'my_build' do |temp_dir|
puts "Temporary workspace is #{temp_dir}"
do_some_stuff(temp_dir)
end
puts "Temporary directory already deleted"
What would be the best bang for the buck to do that in a Bash script?
Here is my current implementation. Any thoughts or suggestions?
here=$( pwd )
tdir=$( mktemp -d )
trap 'return_here' INT TERM EXIT
return_here () {
cd "$here"
[ -d "$tdir" ] && rm -rf "$tdir"
}
do_stuff # This may succeed, fail, change dir, or I may ^C it.
return_here
Here you go:
#!/bin/bash
TDIR=`mktemp -d`
trap "{ cd - ; rm -rf $TDIR; exit 255; }" SIGINT
cd $TDIR
# do important stuff here
cd -
rm -rf $TDIR
exit 0