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That is because of bash's history expansion. It tries to expand the exclamation mark. Try switching it off first:
set +H Then it should work.

You could also escape the exclamation mark(s):
grep...

No idea why perl does that, but you can try this: awk '{ gsub(/,/,""); $0=$7 } 1'

[ -z "$lastfile" ] && { echo "No C program found" ; exit 1 ; }