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On Friday 24 March 2006 15:36, Boyd Stephen Smith Jr. wrote: |
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> > > Michael Kintzios wrote: |
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> > > > what I think is needed |
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> > > > here is untarring of the archive, while untarred data is |
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> > > > dynamically deleted immediately after untarred to make space for |
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> > > > more data to be untarred . . . do I make sense? |
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> > > |
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> > > Yes, but GNU tar cannot do that, it can only do one command at a |
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> > > time, either --extract or --delete or ... |
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> > |
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> > Yes, that's why I was hoping that some clever bash-ery may be able to |
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> > pipe the lot together. |
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> |
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> Perhaps: |
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> tar xvf gentoo_usr.tar | while read file; do tar --delete f gentoo_usr.tar |
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> "$file"; done |
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> |
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> That might just screw up your tar file and/or extract junk; I didn't test |
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> it at all. |
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ROFL. |
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No that won't work. ;) You cannot delete while extracting and when extraction |
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is completed there is no point. This, however, does work: |
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tar tf gentoo_usr.tar | sort -r | while read file; do tar -xf gentoo_usr.tar |
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"$file" && tar --delete -f gentoo_usr.tar "$file"; done |
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First of all the dash before f when deleting is necessary. That's just syntax. |
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Secondly the sort -r is VERY important to make sure it extracts the deepest |
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files (in terms of path) first then deletes them. Both -x and --delete or |
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recursive by default. |
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The problem with this, however, is that it only works with a tar file. |
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Apparently it is not possible to delete a file from a compressed tar file. |
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-- |
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Bo Andresen |
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-- |
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gentoo-user@g.o mailing list |
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