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-.\" Copyright (c) 1983, 1991, 1993
-.\"	The Regents of the University of California.  All rights reserved.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\"    notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\"    notice, this list of conditions and the following disclaimer in the
-.\"    documentation and/or other materials provided with the distribution.
-.\" 4. Neither the name of the University nor the names of its contributors
-.\"    may be used to endorse or promote products derived from this software
-.\"    without specific prior written permission.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-.\" SUCH DAMAGE.
-.\"
-.\"     @(#)psignal.3	8.2 (Berkeley) 2/27/95
-.\" $FreeBSD$
-.\"
-.Dd February 27, 1995
-.Dt PSIGNAL 3
-.Os
-.Sh NAME
-.Nm psignal ,
-.Nm strsignal ,
-.Nm sys_siglist ,
-.Nm sys_signame
-.Nd system signal messages
-.Sh LIBRARY
-.Lb libc
-.Sh SYNOPSIS
-.In signal.h
-.Ft void
-.Fn psignal "unsigned sig" "const char *s"
-.Vt extern const char * const sys_siglist[] ;
-.Vt extern const char * const sys_signame[] ;
-.In string.h
-.Ft "char *"
-.Fn strsignal "int sig"
-.Sh DESCRIPTION
-The
-.Fn psignal
-and
-.Fn strsignal
-functions locate the descriptive message
-string for a signal number.
-.Pp
-The
-.Fn strsignal
-function accepts a signal number argument
-.Fa sig
-and returns a pointer to the corresponding message string.
-.Pp
-The
-.Fn psignal
-function accepts a signal number argument
-.Fa sig
-and writes it to the standard error.
-If the argument
-.Fa s
-is
-.Pf non- Dv NULL
-and does not point to the null character,
-.Fa s
-is written to the standard error file descriptor
-prior to the message string,
-immediately followed by a colon and a space.
-If the signal number is not recognized
-.Pq Xr sigaction 2 ,
-the string
-.Dq "Unknown signal
-is produced.
-.Pp
-The message strings can be accessed directly
-through the external array
-.Va sys_siglist ,
-indexed by recognized signal numbers.
-The external array
-.Va sys_signame
-is used similarly and
-contains short, lower-case abbreviations for signals
-which are useful for recognizing signal names
-in user input.
-The defined variable
-.Dv NSIG
-contains a count of the strings in
-.Va sys_siglist
-and
-.Va sys_signame .
-.Sh SEE ALSO
-.Xr sigaction 2 ,
-.Xr perror 3 ,
-.Xr strerror 3
-.Sh HISTORY
-The
-.Fn psignal
-function appeared in
-.Bx 4.2 .