skripti/sponge_only_on_success.sh


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#!/bin/bash
p=`rev <<<$0 | cut -d/ -f1 | rev`
t=`mktemp -p "" $p.XXX`
trap "rm $t" EXIT
o=$1
shift
$@ > $t
r=$?
if [ $r -eq 0 ]
then
cat $t > $o
else
echo called command $@ exited with nonzero $r >&2
exit $r
fi