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Clarify format of exit status code. Note when a return code of -1 can

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be expected.

PR:		docs/9701
Submitted by:	Marc van Kempen <marc@bowtie.nl>
This commit is contained in:
jkoshy 1999-01-27 03:54:09 +00:00
parent 621703352c
commit 581d7ac946
1 changed files with 8 additions and 4 deletions
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12
lib/libc/stdlib/system.3
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@ -75,15 +75,19 @@ is available, and zero if it is not.
The
.Fn system
function
returns the exit status of the shell, or \-1 if the
.Xr wait 2
for the shell failed.
returns the exit status of the shell as returned by
.Xr waitpid 2 ,
or \-1 if an error occurred when invoking
.Xr fork 2
or
.Xr waitpid 2 .
A return value of 127 means the execution of the shell
failed.
.Sh SEE ALSO
.Xr sh 1 ,
.Xr execve 2 ,
.Xr wait 2 ,
.Xr fork 2 ,
.Xr waitpid 2 ,
.Xr popen 3
.Sh STANDARDS
The