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0e479ac8f7
When set, it forces all timestamps and owners to zero and modes to 0644. Useful for producing libraries that are bitwise identical across multiple build runs. Submitted by: Erik Cederstrand Reviewed by: Kai Wang
416 lines
9.9 KiB
Groff
416 lines
9.9 KiB
Groff
.\" Copyright (c) 2007 Joseph Koshy. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" This software is provided by Joseph Koshy ``as is'' and
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.\" any express or implied warranties, including, but not limited to, the
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.\" implied warranties of merchantability and fitness for a particular purpose
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.\" are disclaimed. in no event shall Joseph Koshy be liable
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.\" for any direct, indirect, incidental, special, exemplary, or consequential
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.\" damages (including, but not limited to, procurement of substitute goods
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.\" or services; loss of use, data, or profits; or business interruption)
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.\" however caused and on any theory of liability, whether in contract, strict
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.\" liability, or tort (including negligence or otherwise) arising in any way
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.\" out of the use of this software, even if advised of the possibility of
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.\" such damage.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd May 17, 2010
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.Dt AR 1
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.Os
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.Sh NAME
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.Nm ar ,
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.Nm ranlib
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.Nd manage archives
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.Sh SYNOPSIS
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.Nm
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.Fl d
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.Op Fl T
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.Op Fl j
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.Op Fl v
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.Op Fl z
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.Ar archive
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.Ar files ...
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.Nm
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.Fl m
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.Op Fl T
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.Op Fl a Ar position-after
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.Op Fl b Ar position-before
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.Op Fl i Ar position-before
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.Op Fl j
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.Op Fl s
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.Op Fl z
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.Ar archive
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.Ar files ...
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.Nm
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.Fl p
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.Op Fl T
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.Op Fl v
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.Ar archive
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.Op Ar files ...
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.Nm
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.Fl r
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.Op Fl T
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.Op Fl a Ar position-after
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.Op Fl b Ar position-before
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.Op Fl c
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.Op Fl D
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.Op Fl i Ar position-before
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.Op Fl j
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.Op Fl s
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.Op Fl u
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.Op Fl v
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.Op Fl z
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.Ar archive
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.Ar files ...
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.Nm
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.Fl s
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.Op Fl j
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.Op Fl z
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.Ar archive
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.Nm
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.Fl t
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.Op Fl T
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.Op Fl v
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.Ar archive
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.Op Ar files ...
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.Nm
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.Fl x
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.Op Fl C
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.Op Fl T
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.Op Fl o
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.Op Fl u
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.Op Fl v
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.Ar archive
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.Op Ar files ...
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.Nm ranlib
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.Ar archive ...
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.Sh DESCRIPTION
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The
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.Nm
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utility creates and maintains groups of files combined into an
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archive.
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Once an archive has been created, new files can be added to it, and
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existing files can be extracted, deleted or replaced.
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.Pp
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Files are named in the archive by their last file name component,
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so if a file referenced by a path containing a
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.Dq /
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is archived, it will be named by the last component of the path.
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Similarly when matching paths listed on the command line against
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file names stored in the archive, only the last component of the
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path will be compared.
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.Pp
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The normal use of
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.Nm
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is for the creation and maintenance of libraries suitable for use
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with the link editor
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.Xr ld 1 ,
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although it is not restricted to this purpose.
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The
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.Nm
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utility can create and manage an archive symbol table (see
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.Xr ar 5 )
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used to speed up link editing operations.
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If a symbol table is present in an archive, it will be
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kept up-to-date by subsequent operations on the archive (excepting
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the quick update specified by the
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.Fl q
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option).
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.Pp
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The
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.Nm ranlib
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utility is used to add an archive symbol table
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to an existing archive.
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.Sh OPTIONS
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The
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.Nm
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utility supports the following options:
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.Bl -tag -width indent
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.It Fl a Ar member-after
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When used with option
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.Fl m
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this option specifies that the archive members specified by
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arguments
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.Ar files ...
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are moved to after the archive member named by argument
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.Ar member-after .
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When used with option
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.Fl r
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this option specifies that the files specified by arguments
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.Ar files ...
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are added after the archive member named by argument
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.Ar member-after .
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.It Fl b Ar member-before
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When used with option
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.Fl m
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this option specifies that the archive members specified by
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arguments
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.Ar files ...
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are moved to before the archive member named by argument
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.Ar member-before .
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When used with option
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.Fl r
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this option specifies that the files specified by arguments
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.Ar files ...
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are added before the archive member named by argument
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.Ar member-before .
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.It Fl c
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Suppress the informational message printed when a new archive is
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created using the
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.Fl r
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and
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.Fl q
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options.
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.It Fl C
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Prevent extracted files from replacing like-named files
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in the file system.
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.It Fl d
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Delete the members named by arguments
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.Ar files ...
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from the archive specified by argument
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.Ar archive .
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The archive's symbol table, if present, is updated to reflect
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the new contents of the archive.
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.It Fl D
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When used in combination with the
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.Fl r
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or
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.Fl q
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option, insert 0's instead of the real mtime, uid and gid values
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and 0644 instead of file mode from the members named by arguments
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.Ar files ... .
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This ensures that checksums on the resulting archives are reproducible
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when member contents are identical.
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.It Fl f
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Synonymous with option
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.Fl T .
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.It Fl i Ar member-before
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Synonymous with option
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.Fl b .
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.It Fl j
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This option is accepted but ignored.
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.It Fl m
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Move archive members specified by arguments
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.Ar files ...
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within the archive.
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If a position has been specified by one of the
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.Fl a ,
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.Fl b
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or
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.Fl i
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options, the members are moved to before or after the specified
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position.
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If no position has been specified, the specified members are moved
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to the end of the archive.
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If the archive has a symbol table, it is updated to reflect the
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new contents of the archive.
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.It Fl o
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Preserve the original modification times of members when extracting
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them.
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.It Fl p
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Write the contents of the specified archive members named by
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arguments
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.Ar files ...
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to standard output.
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If no members were specified, the contents of all the files in the
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archive are written in the order they appear in the archive.
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.It Fl q
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Append the files specified by arguments
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.Ar files ...
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to the archive specified by argument
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.Ar archive
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without checking if the files already exist in the archive and
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without updating the archive's symbol table.
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If the archive file
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.Ar archive
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does not already exist, a new archive is created.
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However, to be compatible with GNU
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.Nm ,
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option
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.Fl q
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will update the archive's symbol table.
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.It Fl r
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Replace (add) the files specified by arguments
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.Ar files ...
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in the archive specified by argument
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.Ar archive ,
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creating the archive if necessary.
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Files that replace existing files do not change the order of files
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within the archive.
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If a file named in arguments
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.Ar files ...
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does not exist, existing members in the archive that match that
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name are not changed.
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New files are added to the end of the archive unless one of the
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positioning options
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.Fl a ,
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.Fl b
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or
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.Fl i
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is specified.
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The archive symbol table, if it exists, is updated to reflect the
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new state of the archive.
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.It Fl s
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Add an archive symbol table (see
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.Xr ar 5 )
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to the archive specified by argument
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.Ar archive .
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Invoking
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.Nm
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with the
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.Fl s
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option alone is equivalent to invoking
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.Nm ranlib .
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.It Fl t
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List the files specified by arguments
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.Ar files ...
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in the order in which they appear in the archive, one per line.
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If no files are specified, all files in the archive are listed.
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.It Fl T
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Use only the first fifteen characters of the archive member name or
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command line file name argument when naming archive members.
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.It Fl u
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Conditionally update the archive or extract members.
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When used with the
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.Fl r
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option, files named by arguments
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.Ar files ...
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will be replaced in the archive if they are newer than their
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archived versions.
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When used with the
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.Fl x
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option, the members specified by arguments
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.Ar files ...
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will be extracted only if they are newer than the corresponding
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files in the file system.
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.It Fl v
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Provide verbose output.
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When used with the
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.Fl d ,
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.Fl m ,
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.Fl q
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or
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.Fl x
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options,
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.Nm
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gives a file-by-file description of the archive modification being
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performed, which consists of three white-space separated fields:
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the option letter, a dash
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.Dq "-" ,
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and the file name.
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When used with the
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.Fl r
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option,
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.Nm
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displays the description as above, but the initial letter is an
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.Dq a
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if the file is added to the archive, or an
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.Dq r
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if the file replaces a file already in the archive.
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When used with the
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.Fl p
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option, the name of the file enclosed in
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.Dq <
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and
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.Dq >
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characters is written to standard output preceded by a single newline
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character and followed by two newline characters.
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The contents of the named file follow the file name.
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When used with the
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.Fl t
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option,
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.Nm
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displays eight whitespace separated fields:
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the file permissions as displayed by
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.Xr strmode 3 ,
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decimal user and group IDs separated by a slash (
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.Dq / Ns ) ,
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the file size in bytes, the file modification time in
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.Xr strftime 3
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format
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.Dq "%b %e %H:%M %Y" ,
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and the name of the file.
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.It Fl x
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Extract archive members specified by arguments
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.Ar files ...
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into the current directory.
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If no members have been specified, extract all members of the archive.
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If the file corresponding to an extracted member does not exist it
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will be created.
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If the file corresponding to an extracted member does exist, its owner
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and group will not be changed while its contents will be overwritten
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and its permissions will set to that entered in the archive.
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The file's access and modification time would be that of the time
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of extraction unless the
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.Fl o
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option was specified.
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.It Fl z
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This option is accepted but ignored.
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.El
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.Sh EXAMPLES
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To create a new archive
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.Pa ex.a
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containing three files
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.Pa ex1.o ,
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.Pa ex2.o
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and
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.Pa ex3.o ,
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use:
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.Dl "ar -rc ex.a ex1.o ex2.o ex3.o"
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.Pp
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To add an archive symbol table to an existing archive
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.Pa ex.a ,
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use:
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.Dl "ar -s ex.a"
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.Pp
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To delete file
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.Pa ex1.o
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from archive
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.Pa ex.a ,
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use:
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.D1 "ar -d ex.a ex1.o"
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.Pp
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To verbosely list the contents of archive
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.Pa ex.a ,
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use:
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.D1 "ar -tv ex.a"
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.Sh DIAGNOSTICS
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.Ex -std
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.Sh SEE ALSO
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.Xr ld 1 ,
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.Xr archive 3 ,
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.Xr elf 3 ,
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.Xr strftime 3 ,
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.Xr strmode 3 ,
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.Xr ar 5
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.\" .Sh COMPATIBILITY
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.\" .Nm
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.\" is expected to be compatible with GNU and SVR4
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.\" .Nm .
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.\" .Sh STANDARDS
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.\" Do the POSIX/SuSv3 standards have anything to say about AR(1)?
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.Sh HISTORY
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An
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.Nm
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command first appeared in AT&T UNIX Version 1.
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In
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.Fx 8.0 ,
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.An "Kai Wang" Aq kaiw@FreeBSD.org
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reimplemented
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.Nm
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and
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.Nm ranlib
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using the
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.Lb libarchive
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and the
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.Lb libelf .
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