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[Help-tar] Listing (tv) with strip-components does not work as expected


From: Vincent Legoll
Subject: [Help-tar] Listing (tv) with strip-components does not work as expected
Date: Mon, 28 Aug 2017 12:03:02 +0200

I tried to use "--strip-components=1" alongside "-tv" to see if
it will do what I want, but it does not strip...

mkdir -p a/b/c
touch a/b/c/toto.txt
tar -cf a.tar a
tar -tvf a.tar

drwx------ vince/vince       0 2017-08-28 11:52 a/
drwx------ vince/vince       0 2017-08-28 11:52 a/b/
drwx------ vince/vince       0 2017-08-28 11:52 a/b/c/
-rw------- vince/vince       0 2017-08-28 11:52 a/b/c/toto.txt

tar --strip-components=1 -tvf a.tar

drwx------ vince/vince       0 2017-08-28 11:52 a/
drwx------ vince/vince       0 2017-08-28 11:52 a/b/
drwx------ vince/vince       0 2017-08-28 11:52 a/b/c/
-rw------- vince/vince       0 2017-08-28 11:52 a/b/c/toto.txt

I would have expected something like that:

drwx------ vince/vince       0 2017-08-28 11:52 b/
drwx------ vince/vince       0 2017-08-28 11:52 b/c/
-rw------- vince/vince       0 2017-08-28 11:52 b/c/toto.txt

The listing problem also happens with extraction, despite the extraction
honoring the strip-component param:

tar --strip-components=1 -xvf a.tar
a/b/
a/b/c/
a/b/c/toto.txt

ls -lR b
b:
total 4
drwx------ 2 vince vince 4096 Aug 28 11:52 c

b/c:
total 0
-rw------- 1 vince vince 0 Aug 28 11:52 toto.txt

Is that the intended behavior ?

If yes, maybe adding a small warning to the man page may
avoid the confusion:

The man page has this:
       --strip-components=NUMBER
              Strip NUMBER leading components from file names on extraction.

So it's technically right, and sufficient, but...

-- 
Vincent Legoll



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