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sh(1): Correct synopsis and make precise how $0 is set.

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In particular, the extra argument to set $0 with -c was not documented.

MFC after:	1 week
This commit is contained in:
Jilles Tjoelker 2010-10-31 23:03:11 +00:00
parent e598f12273
commit 57a40f7d08
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=214609
1 changed files with 24 additions and 4 deletions
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28
bin/sh/sh.1
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@ -32,7 +32,7 @@
.\" from: @(#)sh.1 8.6 (Berkeley) 5/4/95
.\" $FreeBSD$
.\"
.Dd October 16, 2010
.Dd October 31, 2010
.Dt SH 1
.Os
.Sh NAME
@ -40,9 +40,24 @@
.Nd command interpreter (shell)
.Sh SYNOPSIS
.Nm
.Op Fl /+abCEefIimnPpsTuVvx
.Op Fl /+abCEefIimnPpTuVvx
.Op Fl /+o Ar longname
.Op Fl c Ar string
.Oo
.Ar script
.Op Ar arg ...
.Oc
.Nm
.Op Fl /+abCEefIimnPpTuVvx
.Op Fl /+o Ar longname
.Fl c Ar string
.Oo
.Ar name
.Op Ar arg ...
.Oc
.Nm
.Op Fl /+abCEefIimnPpTuVvx
.Op Fl /+o Ar longname
.Fl s
.Op Ar arg ...
.Sh DESCRIPTION
The
@ -1109,7 +1124,12 @@ the process ID and its exit status until the
.Ic wait
built-in command reports completion of the process.
.It Li $0
(zero) Expands to the name of the shell or shell script.
(zero) Expands to the name of the shell script if passed on the command line,
the
.Ar name
operand if given (with
.Fl c )
or otherwise argument 0 passed to the shell.
.El
.Ss Special Variables
The following variables are set by the shell or