freebsd/usr.bin/ar/ar.1

.\" Copyright (c) 2007 Joseph Koshy.  All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\"    notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\"    notice, this list of conditions and the following disclaimer in the
.\"    documentation and/or other materials provided with the distribution.
.\"
.\" This software is provided by Joseph Koshy ``as is'' and
.\" any express or implied warranties, including, but not limited to, the
.\" implied warranties of merchantability and fitness for a particular purpose
.\" are disclaimed.  in no event shall Joseph Koshy be liable
.\" for any direct, indirect, incidental, special, exemplary, or consequential
.\" damages (including, but not limited to, procurement of substitute goods
.\" or services; loss of use, data, or profits; or business interruption)
.\" however caused and on any theory of liability, whether in contract, strict
.\" liability, or tort (including negligence or otherwise) arising in any way
.\" out of the use of this software, even if advised of the possibility of
.\" such damage.
.\"
.\" $FreeBSD$
.\"
.Dd May 17, 2010
.Dt AR 1
.Os
.Sh NAME
.Nm ar ,
.Nm ranlib
.Nd manage archives
.Sh SYNOPSIS
.Nm
.Fl d
.Op Fl T
.Op Fl f
.Op Fl j
.Op Fl v
.Op Fl z
.Ar archive
.Ar
.Nm
.Fl m
.Op Fl T
.Op Fl a Ar position-after
.Op Fl b Ar position-before
.Op Fl f
.Op Fl i Ar position-before
.Op Fl j
.Op Fl s | Fl S
.Op Fl z
.Ar archive
.Ar
.Nm
.Fl p
.Op Fl T
.Op Fl f
.Op Fl v
.Ar archive
.Op Ar
.Nm
.Fl q
.Op Fl T
.Op Fl c
.Op Fl D
.Op Fl f
.Op Fl s | Fl S
.Op Fl v
.Op Fl z
.Ar archive
.Ar
.Nm
.Fl r
.Op Fl T
.Op Fl a Ar position-after
.Op Fl b Ar position-before
.Op Fl c
.Op Fl D
.Op Fl f
.Op Fl i Ar position-before
.Op Fl j
.Op Fl s | Fl S
.Op Fl u
.Op Fl v
.Op Fl z
.Ar archive
.Ar
.Nm
.Fl s
.Op Fl j
.Op Fl z
.Ar archive
.Nm
.Fl t
.Op Fl f
.Op Fl T
.Op Fl v
.Ar archive
.Op Ar
.Nm
.Fl x
.Op Fl C
.Op Fl T
.Op Fl f
.Op Fl o
.Op Fl u
.Op Fl v
.Ar archive
.Op Ar
.Nm
.Fl M
.Nm ranlib
.Op Fl D
.Ar archive ...
.Sh DESCRIPTION
The
.Nm
utility creates and maintains groups of files combined into an
archive.
Once an archive has been created, new files can be added to it, and
existing files can be extracted, deleted or replaced.
.Pp
Files are named in the archive by their last file name component,
so if a file referenced by a path containing a
.Dq /
is archived, it will be named by the last component of the path.
Similarly when matching paths listed on the command line against
file names stored in the archive, only the last component of the
path will be compared.
.Pp
The normal use of
.Nm
is for the creation and maintenance of libraries suitable for use
with the link editor
.Xr ld 1 ,
although it is not restricted to this purpose.
The
.Nm
utility can create and manage an archive symbol table (see
.Xr ar 5 )
used to speed up link editing operations.
If a symbol table is present in an archive, it will be
kept up-to-date by subsequent operations on the archive (excepting
the quick update specified by the
.Fl q
option).
.Pp
The
.Nm ranlib
utility is used to add an archive symbol table
to an existing archive.
.Sh OPTIONS
The
.Nm
utility supports the following options:
.Bl -tag -width indent
.It Fl a Ar member-after
When used with option
.Fl m
this option specifies that the archive members specified by
arguments
.Ar
are moved to after the archive member named by argument
.Ar member-after .
When used with option
.Fl r
this option specifies that the files specified by arguments
.Ar
are added after the archive member named by argument
.Ar member-after .
.It Fl b Ar member-before
When used with option
.Fl m
this option specifies that the archive members specified by
arguments
.Ar
are moved to before the archive member named by argument
.Ar member-before .
When used with option
.Fl r
this option specifies that the files specified by arguments
.Ar
are added before the archive member named by argument
.Ar member-before .
.It Fl c
Suppress the informational message printed when a new archive is
created using the
.Fl r
and
.Fl q
options.
.It Fl C
Prevent extracted files from replacing like-named files
in the file system.
.It Fl d
Delete the members named by arguments
.Ar
from the archive specified by argument
.Ar archive .
The archive's symbol table, if present, is updated to reflect
the new contents of the archive.
.It Fl D
When used in combination with the 
.Fl r
or
.Fl q
option, insert 0's instead of the real mtime, uid and gid values 
and 0644 instead of file mode from the members named by arguments
.Ar .
This ensures that checksums on the resulting archives are reproducible
when member contents are identical.
.It Fl f
Synonymous with option
.Fl T .
.It Fl i Ar member-before
Synonymous with option
.Fl b .
.It Fl j
This option is accepted but ignored.
.It Fl l
This option is accepted for compatibility with GNU
.Xr ar 1 ,
but is ignored.
.It Fl m
Move archive members specified by arguments
.Ar
within the archive.
If a position has been specified by one of the
.Fl a ,
.Fl b
or
.Fl i
options, the members are moved to before or after the specified
position.
If no position has been specified, the specified members are moved
to the end of the archive.
If the archive has a symbol table, it is updated to reflect the
new contents of the archive.
.It Fl M
Read and execute MRI librarian commands from standard input.
.It Fl o
Preserve the original modification times of members when extracting
them.
.It Fl p
Write the contents of the specified archive members named by
arguments
.Ar
to standard output.
If no members were specified, the contents of all the files in the
archive are written in the order they appear in the archive.
.It Fl q
Append the files specified by arguments
.Ar
to the archive specified by argument
.Ar archive
without checking if the files already exist in the archive and
without updating the archive's symbol table.
If the archive file
.Ar archive
does not already exist, a new archive is created.
However, to be compatible with GNU
.Nm ,
option
.Fl q
will update the archive's symbol table.
.It Fl r
Replace (add) the files specified by arguments
.Ar
in the archive specified by argument
.Ar archive ,
creating the archive if necessary.
Replacing existing members will not change the order of members within
the archive.
If a file named in arguments
.Ar
does not exist, existing members in the archive that match that
name are not changed.
New files are added to the end of the archive unless one of the
positioning options
.Fl a ,
.Fl b
or
.Fl i
is specified.
The archive symbol table, if it exists, is updated to reflect the
new state of the archive.
.It Fl s
Add an archive symbol table (see
.Xr ar 5 )
to the archive specified by argument
.Ar archive .
Invoking
.Nm
with the
.Fl s
option alone is equivalent to invoking
.Nm ranlib .
.It Fl S
Do not generate an archive symbol table.
.It Fl t
List the files specified by arguments
.Ar
in the order in which they appear in the archive, one per line.
If no files are specified, all files in the archive are listed.
.It Fl T
Use only the first fifteen characters of the archive member name or
command line file name argument when naming archive members.
.It Fl u
Conditionally update the archive or extract members.
When used with the
.Fl r
option, files named by arguments
.Ar
will be replaced in the archive if they are newer than their
archived versions.
When used with the
.Fl x
option, the members specified by arguments
.Ar
will be extracted only if they are newer than the corresponding
files in the file system.
.It Fl v
Provide verbose output.
When used with the
.Fl d ,
.Fl m ,
.Fl q
or
.Fl x
options,
.Nm
gives a file-by-file description of the archive modification being
performed, which consists of three white-space separated fields:
the option letter, a dash
.Dq "-" ,
and the file name.
When used with the
.Fl r
option,
.Nm
displays the description as above, but the initial letter is an
.Dq a
if the file is added to the archive, or an
.Dq r
if the file replaces a file already in the archive.
When used with the
.Fl p
option, the name of the file enclosed in
.Dq <
and
.Dq >
characters is written to standard output preceded by a single newline
character and followed by two newline characters.
The contents of the named file follow the file name.
When used with the
.Fl t
option,
.Nm
displays eight whitespace separated fields:
the file permissions as displayed by
.Xr strmode 3 ,
decimal user and group IDs separated by a slash (
.Dq / Ns ) ,
the file size in bytes, the file modification time in
.Xr strftime 3
format
.Dq "%b %e %H:%M %Y" ,
and the name of the file.
.It Fl V
Print a version string and exit.
.It Fl x
Extract archive members specified by arguments
.Ar
into the current directory.
If no members have been specified, extract all members of the archive.
If the file corresponding to an extracted member does not exist it
will be created.
If the file corresponding to an extracted member does exist, its owner
and group will not be changed while its contents will be overwritten
and its permissions will set to that entered in the archive.
The file's access and modification time would be that of the time
of extraction unless the
.Fl o
option was specified.
.It Fl z
This option is accepted but ignored.
.El
.Sh EXAMPLES
To create a new archive
.Pa ex.a
containing three files
.Pa ex1.o ,
.Pa ex2.o
and
.Pa ex3.o ,
use:
.Dl "ar -rc ex.a ex1.o ex2.o ex3.o"
.Pp
To add an archive symbol table to an existing archive
.Pa ex.a ,
use:
.Dl "ar -s ex.a"
.Pp
To delete file
.Pa ex1.o
from archive
.Pa ex.a ,
use:
.D1 "ar -d ex.a ex1.o"
.Pp
To verbosely list the contents of archive
.Pa ex.a ,
use:
.D1 "ar -tv ex.a"
.Sh DIAGNOSTICS
.Ex -std
.Sh SEE ALSO
.Xr ld 1 ,
.Xr archive 3 ,
.Xr elf 3 ,
.Xr strftime 3 ,
.Xr strmode 3 ,
.Xr ar 5
.Sh STANDARDS COMPLIANCE
The
.Nm
utility's support for the
.Fl a ,
.Fl b ,
.Fl c ,
.Fl i ,
.Fl m ,
.Fl p ,
.Fl q ,
.Fl r ,
.Fl s ,
.Fl t ,
.Fl u ,
.Fl v ,
.Fl C
and
.Fl T
options is believed to be compliant with
.St -p1003.2 .
.Sh HISTORY
An
.Nm
command first appeared in AT&T UNIX Version 1.
In
.Fx 8.0 ,
.An "Kai Wang" Aq kaiw@FreeBSD.org
reimplemented
.Nm
and
.Nm ranlib
using the
.Lb libarchive
and the
.Lb libelf .