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.\"     $OpenBSD: co.1,v 1.19 2005/12/02 11:39:05 xsa Exp $
.\"
.\" Copyright (c) 2005 Xavier Santolaria <xsa@openbsd.org>
.\" All rights reserved.
.\"
.\" Permission to use, copy, modify, and distribute this software for any
.\" purpose with or without fee is hereby granted, provided that the above
.\" copyright notice and this permission notice appear in all copies.
.\"
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.Dd October 03, 2005
.Dt CO 1
.Os
.Sh NAME
.Nm co
.Nd check out RCS revisions
.Sh SYNOPSIS
.Nm
.Bk -words
.Op Fl TV
.Op Fl d Ns Ar date
.Op Fl f Ns Op Ar rev
.Op Fl I Ns Op Ar rev
.Op Fl k Ns Ar mode
.Op Fl l Ns Op Ar rev
.Op Fl M Ns Op Ar rev
.Op Fl m Ns Ar msg
.Op Fl p Ns Op Ar rev
.Op Fl q Ns Op Ar rev
.Op Fl r Ns Op Ar rev
.Op Fl s Ns Ar state
.Op Fl u Ns Op Ar rev
.Op Fl w Ns Op Ar user
.Op Fl x Ns Ar suffixes
.Op Fl z Ns Ar tz
.Ar file ...
.Ek
.Sh DESCRIPTION
.Nm
always performs keyword substitution.
.Pp
The following options are supported:
.Bl -tag -width Ds
.It Fl d Ns Ar date
Retrieve revision as of the latest revision no later than
.Ar date .
.It Fl f Ns Op Ar rev
Force the overwriting of the working file.
.It Fl I Ns Op Ar rev
Interactive mode.
.It Fl k Ns Ar mode
Specify the keyword substitution mode.
.It Fl l Ns Op Ar rev
The same as
.Fl r ,
but also locks the revision.
.It Fl M Ns Op Ar rev
Set the modification time of the file to the date of the
retrieved revision.
.It Fl m Ns Ar msg
Specify a log message.
A line beginning with a hash character
.Pq Sq #
is considered a comment and ignored.
.It Fl p Ns Op Ar rev
Print the latest revision no later than
.Ar rev
to standard output.
If
.Ar rev
is not specified, print HEAD.
.It Fl q Ns Op Ar rev
Be quiet about reporting.
.It Fl r Ns Op Ar rev
Retrieve the latest revision no later than
.Ar rev .
If
.Ar rev
is not specified, retrieve HEAD.
.It Fl s Ns Ar state
Retrieve revision of the specified
.Ar state
only.
.It Fl T
Preserve the modification time of RCS files.
.It Fl u Ns Op Ar rev
The same as
.Fl r ,
but also unlocks the retrieved revision if it was locked.
.It Fl V
Print RCS's version number.
.It Fl w Ns Op Ar user
Retrieve the latest revision which was checked in by the specified
.Ar user .
If the
.Ar user
argument is omitted, the login of the user issuing the command
is assumed.
.It Fl x Ns Ar suffixes
Specifies the suffixes for RCS files.
Suffixes should be separated by the
.Sq /
character.
.It Fl z Ns Ar tz
Specify the date output format in keyword substitution, and the
default time zone for
.Ar date
used in the
.Fl d
option.
.El
.Sh ENVIRONMENT
.Bl -tag -width RCSINIT
.It Ev RCSINIT
If set, this variable should contain a list of space-delimited options that
are prepended to the argument list.
.El
.Sh EXAMPLES
Retrieve the latest revision of file
.Pa foo.c
and lock it for further editing:
.Pp
.Dl $ co -l foo.c
.Pp
Retrieve revision 1.5 of file
.Pa foo.c :
.Pp
.Dl $ co -r1.5 foo.c
.Sh SEE ALSO
.Xr ci 1 ,
.Xr ident 1 ,
.Xr rcs 1 ,
.Xr rcsclean 1 ,
.Xr rcsdiff 1 ,
.Xr rcsmerge 1 ,
.Xr rlog 1