commandline session
$set -o noclobber $ls a.out a.out $ls > a.out bash: a.out: cannot overwrite existing file $ $set +o noclobber $ $ls > a.out $rm a.out $
BEAUTY AND PLAY
$set -o noclobber $ls a.out a.out $ls > a.out bash: a.out: cannot overwrite existing file $ $set +o noclobber $ $ls > a.out $rm a.out $