Package: file-rc Followup-For: Bug #464650 Actually, according to POSIX, `kill -0` is perfectly valid.
$ man -e posix kill | grep ^SYNOPSIS -A 10 | grep .
SYNOPSIS
kill -s signal_name pid ...
kill -l [exit_status]
kill [-signal_name] pid ...
kill [-signal_number] pid ...
--
Jakub Wilk
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