Bug/feature of the '-T -' option of gtar

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2 total messages Started by Robert Crosson Tue, 14 Apr 1992 15:55

#146

Author: Robert Crosson
Date: Tue, 14 Apr 1992 15:55

17 lines
1145 bytes

I have discovered that the -T option of Gnu tar version 1.10 may
have a bug in it.  I created a script that piped file names to tar
which was invoked with the option '-T -'.  In testing the script,
I found that when tar was invoked with that option, but no file names
were sent before the pipe closed, tar used the current directory as 
the place to select files from for archiving.

The script line including tar was essentially as follows:

find <findoptions> | sed -f <sed-script-file> | tar -cvf - -T - > <filename>

I would have thought that, given the '-T -' option but no file names,
tar would have simply exited without doing anything.  Is this a feature
or a bug?

Bob Crosson
crosson@cam.nist.gov

Bug/feature of the '-T -' option of gtar

#150

Author: Michael I Bushnell
Date: Wed, 15 Apr 1992 05:20

29 lines
1693 bytes

   Resent-Date: 14 Apr 92 15:55:34 GMT
   Original-To: gnu-utils-bug@prep.ai.mit.edu
   Path: cam!cam.nist.gov!crosson
   From: crosson@cam.nist.gov (Robert Crosson)
   Sender: gnulists@ai.mit.edu
   Newsgroups: gnu.utils.bug
   Date: 14 Apr 92 15:55:34 GMT
   Resent-From: bug-gnu-utils-request@prep.ai.mit.edu

   I have discovered that the -T option of Gnu tar version 1.10 may
   have a bug in it.  I created a script that piped file names to tar
   which was invoked with the option '-T -'.  In testing the script,
   I found that when tar was invoked with that option, but no file names
   were sent before the pipe closed, tar used the current directory as 
   the place to select files from for archiving.

   The script line including tar was essentially as follows:

   find <findoptions> | sed -f <sed-script-file> | tar -cvf - -T - > <filename>

   I would have thought that, given the '-T -' option but no file names,
   tar would have simply exited without doing anything.  Is this a feature
   or a bug?

This is a side effect of the general rule that tar does the current
directory when there is no list of names.  The names read from -T are
treated exactly like those read from the command line.

	-mi

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