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Plan 9 - man page for ar (plan9 section 1)

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AR(1)											    AR(1)

       ar - archive and library maintainer

       ar key [ posname ] afile [ file ...  ]

       Ar  maintains groups of files combined into a single archive file, afile.  The main use of
       ar is to create and update library files for the loaders 2l(1),	etc.   It  can	be  used,
       though, for any similar purpose.

       Key  is	one  character	from the set drqtpmx, optionally concatenated with one or more of
       vuaibclo.  The files are constituents of the archive afile.  The meanings of the key char-
       acters are:

       d      Delete files from the archive file.

       r      Replace files in the archive file, or add them if missing.  Optional modifiers are

	      u      Replace only files with modified dates later than that of the archive.

	      a      Place new files after posname in the archive rather than at the end.

	      b or i Place new files before posname in the archive.

       q      Quick.   Append  files  to  the end of the archive without checking for duplicates.
	      Avoids quadratic behavior in

       t      List a table of contents of the archive.	If names are given, only those files  are

       p      Print the named files in the archive.

       m      Move the named files to the end or elsewhere, specified as with

       o      Preserve the access and modification times of files extracted with the x command.

       x      Extract  the  named  files.   If	no  names are given, all files in the archive are
	      extracted.  In neither case does x alter the archive file.

       v      Verbose.	Give a file-by-file description of the making of a new archive file  from
	      the  old archive and the constituent files.  With p, precede each file with a name.
	      With t, give a long listing of all information about the	files,	somewhat  like	a
	      listing by ls(1), showing
		   mode uid/gid size date name

       c      Create.	Normally ar will create a new archive when afile does not exist, and give
	      a warning.  Option c discards any old contents and suppresses the warning.

       l      Local.  Normally ar places its temporary files in the directory /tmp.  This  option
	      causes them to be placed in the local directory.

       When  a	d, r, or m key is specified and all members of the archive are valid object files
       for the same architecture, ar inserts a table of contents, required by the loaders, at the
       front  of the library.  The table of contents is rebuilt whenever the archive is modified,
       except when the q key is specified or when the table of contents is  explicitly	moved  or

       ar cr lib.a *.o
	      Replace the contents of library with the object files in the current directory.



       2l(1), ar(6)

       If  the	same  file  is	mentioned twice in an argument list, it may be put in the archive
       This command predates Plan 9 and makes some invalid assumptions, for  instance  that  user
       id's are numeric.

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