Today I met some shell scirpts like the following:
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| trap "rm -f $file; exit" INT TERM EXIT
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More code here:
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| cleanup() {
echo "Cleaning stuff up..."
exit
}
trap cleanup INT TERM
echo ' --- press ENTER to close --- '
read var
cleanup
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change “trap cleanup INT TERM” above to “trap cleanup INT TERM EXIT” and then execute the script. Enter ‘exit’ and see what differences will happen.
The following are references:
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| http://unix.stackexchange.com/questions/57940/trap-int-term-exit-really-necessary
http://kb.mit.edu/confluence/pages/viewpage.action?pageId=3907156
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