if printf 'OK\n' | tail -n 1 2>&1 | grep OK >/dev/null; then
tail='tail -n'
else
- tail=tail
+ tail='tail -'
fi
fi
#### Add trailing newline to body if it doesn't have one.
- if [ `tail -n 1 "$message_file" | wc -l` -ne 1 ]; then
+ if [ `${tail}1 "$message_file" | wc -l` -ne 1 ]; then
printf '\n' >>"$message_file" || exit 2
fi
else
#### Add trailing newline to body if it doesn't have one.
- [ `printf %s "$body" | tail -n 1 | wc -l` -ne 1 ] && body="$body
+ [ `printf %s "$body" | ${tail}1 | wc -l` -ne 1 ] && body="$body
"
if [ "$tmpfileresent" ]; then