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.\" Copyright (c) 2011 Joseph Koshy.  All rights reserved.
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.\" $Id: mcs.1 2247 2011-11-29 08:41:34Z jkoshy $
.\"
.Dd November 29, 2011
.Os
.Dt MCS 1
.Sh NAME
.Nm mcs
.Nd manipulate the comment section of an ELF object
.Sh SYNOPSIS
.Nm
.Op Fl a Ar string
.Op Fl c
.Op Fl n Ar name
.Op Fl p
.Ar
.Nm
.Fl d
.Op Fl n Ar name
.Ar
.Nm
.Fl h | Fl -help
.Nm
.Fl V | Fl -version
.Sh DESCRIPTION
The
.Nm
utility is used to manipulate comment sections in an ELF object.
If a command-line argument
.Ar file
names an
.Xr ar 1
archive, then
.Nm
will operate on the ELF objects contained in the archive.
.Pp
By default
.Nm
operates on the ELF section named
.Dq .comment .
This may be changed using the
.Fl n
option.
.Pp
The
.Nm
utility supports the following options:
.Bl -tag -width ".Fl a Ar string"
.It Fl a Ar string
Append the text in
.Ar string
to the comment section.
This option may be specified multiple times.
.It Fl c
Compress the comment section by removing duplicate entries.
.It Fl d
Delete the comment section from the ELF object.
.It Fl h | Fl -help
Display a usage message and exit.
.It Fl n Ar name
Operate on the section named
.Ar name .
.It Fl p
Print the contents of the comment section.
This step is taken after actions specified by the
.Fl a
and
.Fl c
options (if any) are completed.
.It Fl V | Fl -version
Print a version identifier and exit.
.El
.Sh COMPATIBILITY
The behavior of the
.Nm
utility differs from its SVR4 counterpart in the following ways:
.Bl -bullet -compact
.It
If the
.Fl d
option is specified, it causes any
.Fl a ,
.Fl c
and
.Fl p
options present to be ignored.
.It
The order of options
.Fl a ,
.Fl c ,
.Fl d ,
and
.Fl p
on the command line is not significant.
.El
.Sh DIAGNOSTICS
.Ex -std
.Sh SEE ALSO
.Xr ar 1 ,
.Xr elfcopy 1 ,
.Xr ld 1 ,
.Xr nm 1 ,
.Xr strip 1