kill: man page is missing a description of "kill -0"
Addresses-Red-Hat-Bugzilla: #429559 Signed-off-by: Karel Zak <kzak@redhat.com>
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@ -20,6 +20,8 @@ be caught.
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Most modern shells have a builtin kill function, with a usage rather similar
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to that of the command described here. The `-a' and `-p' options,
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and the possibility to specify pids by command name is a local extension.
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.PP
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If sig is 0, then no signal is sent, but error checking is still performed.
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.SH OPTIONS
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.TP
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.IR pid ...
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