psignal man page on 4.4BSD

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PSIGNAL(3)		 BSD Library Functions Manual		    PSIGNAL(3)

NAME
     psignal, sys_siglist, sys_signame — system signal messages

SYNOPSIS
     #include <sys/signal.h>

     void
     psignal(unsigned sig, const char *s);

     extern char *sys_siglist[];
     extern char *sys_signame[];

DESCRIPTION
     The psignal() function locates the descriptive message string for the
     given signal number sig and writes it to the standard error.

     If the argument s is non-NULL it 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 (sigaction(2)), the
     string “Unknown signal” is produced.

     The message strings can be accessed directly through the external array
     sys_siglist, indexed by recognized signal numbers.	 The external array
     sys_signame is used similarly and contains short, lower-case abbrevia‐
     tions for signals which are useful for recognizing signal names in user
     input.  The defined variable NSIG contains a count of the strings in
     sys_siglist and sys_signame.

SEE ALSO
     sigaction(2), perror(3)

HISTORY
     The psignal() function appeared in 4.2BSD.

4.2 Berkeley Distribution      February 27, 1995     4.2 Berkeley Distribution
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