dhm@necis.UUCP (Dave Mitchell) (05/06/89)
I am in need of information on the ar command. I am updating documentation and
there is none for the u option with ar. I have used ar with the u option but
couldn't determine what it does. The source code wasn't a help either. If anyone
knows what it does and if there is any documentation available, your help would
be appreciated.
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David Mitchell dhm@necis.nec.com
NEC Information Systems, Inc.
1300 Massachusetts Avenue
Boxborough, Mass. 01719 508-635-6278
*****************************************************************************chris@mimsy.UUCP (Chris Torek) (05/06/89)
In article <1034@necis.UUCP> dhm@necis.UUCP (Dave Mitchell) writes: >... I have used ar with the u option but couldn't determine what it >does. The source code wasn't a help either. It was for me :-) According to the source, `ar u' is an alias for `ar r', except that it will not replace the sub-file in the archive unless the real file is newer. That is: % ar crv foo.a foo.o a - foo.o % ar rv foo.a foo.o r - foo.o % ar uv foo.a foo.o % touch foo.o % ar uv foo.a foo.o r - foo.o % (and I even tested it, after writing this :-) ) -- In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 7163) Domain: chris@mimsy.umd.edu Path: uunet!mimsy!chris