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DESCRIPTION

Only the super-user may send signals to other users' processes.

The options are as follows:

-s signal_name

A symbolic signal name specifying the signal to be sent instead of the default TERM.

-l [exit_status]

If no operand is given, list the signal names; otherwise, write the signal name corresponding to exit_status.

-signal_name

A symbolic signal name specifying the signal to be sent instead of the default TERM.

-signal_number

A non-negative decimal integer, specifying the signal to be sent instead of the default TERM.

The following pids have special meanings:

-1

If superuser, broadcast the signal to all processes; otherwise broadcast to all processes belonging to the user.

Some of the more commonly used signals:

1

HUP (hang up)

2

INT (interrupt)

3

QUIT (quit)

6

ABRT (abort)

9

KILL (non-catchable, non-ignorable kill)

14

ALRM (alarm clock)

15

TERM (software termination signal)

Kill is a built-in to csh(1); it allows job specifiers of the form ``%...'' as arguments so process id's are not as often used as kill arguments. See csh(1) for details.