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Is it possible and how can I zip a symlink from a linux shell?

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2 Answers 2

up vote 13 down vote accepted

You can store symlinks as symlinks (as opposed to a copy of the file/directory they point to) using the --symlinks parameter of the standard zip.

Assuming foo is a directory containing symlinks:

zip --symlinks -r foo.zip foo/

Rar equivalent:

rar a -ol foo.rar foo/

tar stores them as is by default.

tar czpvf foo.tgz foo/

Note that the symlink occupies almost no disk space by itself (just an inode). It's just a kind of pointer in the filesystem, as you probably know.

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1  
i can't use tar, but the --symlinks is not working with zip. are you sure it's the default zip package? –  DucDigital May 3 '11 at 3:33
    
Which distribution you've got? Copyright (c) 1990-2008 Info-ZIP - Type 'zip "-L"' for software license. Zip 3.0 (July 5th 2008). Can you use rar instead? See added example. –  Eduardo Ivanec May 3 '11 at 3:39
    
Copyright (c) 1990-2006 Info-ZIP. All rights reserved. This is Zip 2.32 probably because of this. i will try rar –  DucDigital May 3 '11 at 4:03
    
Splitting hairs, but technically the symlink does occupy disk space, consuming an inode. –  ttyS0 May 3 '11 at 4:06
    
True that. Actually from what I read in the past they were even more like regular files containing the path to the pointed file/directory. Now they're just a special kind of inode if I remember correctly. –  Eduardo Ivanec May 3 '11 at 4:13

On RHEL 5, we have

$ zip -h
Copyright (C) 1990-2005 Info-ZIP
Type 'zip "-L"' for software license.
Zip 2.31 (March 8th 2005). Usage:
zip [-options] [-b path] [-t mmddyyyy] [-n suffixes] [zipfile list] [-xi list]
(snip)
  -y   store symbolic links as the link instead of the referenced file
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