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Full Discussion: How to check whether directory has files in it or not in shell script?
Top Forums Shell Programming and Scripting How to check whether directory has files in it or not in shell script? Post 302806553 by VSom007 on Monday 13th of May 2013 08:52:59 AM
Old 05-13-2013
Linux How to check whether directory has files in it or not in shell script?
hi,

I am having script in which i want to check if directory has any file in it or not. If directory contains a single or more files then and only then it should proceed to further operations...

P.S.: Directory might have thousand number of files. so there might be chance of getting error message of argument list too long...
if anyone can help me with this? Code snippet is as follows -
Code:
files=directory1/* 
 if [ ${#files[@]} -gt 0 ]     
 then
          tar -czvf $file1.tar.gz directory1/ 
          mv $file1.tar.gz directory2

Issue is that though directory1 is empty it is going inside if and creating tar file of the empty directory structure. If there are no files under directory1 then i just want to avoid tarring of the same.
Last edited by VSom007; 05-13-2013 at 09:59 AM..
 

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LEARN ABOUT DEBIAN

virt-tar-out

virt-tar-out(1) 					      Virtualization Support						   virt-tar-out(1)

NAME

       virt-tar-out - Pack a virtual machine disk image directory into a tarball.

SYNOPSIS

	virt-tar-out -a disk.img /dir files.tar

	virt-tar-out -d domain /dir files.tar

	virt-tar-out -d domain /dir - | gzip --best > files.tar.gz

DESCRIPTION

       "virt-tar-out" packs a virtual machine disk image directory into a tarball.

       The first parameter is the absolute path of the virtual machine directory.  The second parameter is the tar file to write.  Use "-" to
       write to standard output.

EXAMPLES

       Download the home directories from a guest:

	virt-tar-out -d MyGuest /home - | gzip --best > homes.tar.gz

JUST A SHELL SCRIPT WRAPPER AROUND GUESTFISH

       This command is just a simple shell script wrapper around the guestfish(1) "tar-out" command.  For anything more complex than a trivial
       copy, you are probably better off using guestfish directly.

OPTIONS

       Since the shell script just passes options straight to guestfish, read guestfish(1) to see the full list of options.

SEE ALSO

       guestfish(1), virt-cat(1), virt-copy-in(1), virt-copy-out(1), virt-edit(1), virt-tar-in(1), <http://libguestfs.org/>.

AUTHORS

       Richard W.M. Jones ("rjones at redhat dot com")

COPYRIGHT

       Copyright (C) 2011 Red Hat Inc.	<http://libguestfs.org/>

       This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by
       the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

       This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

       You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation,
       Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

libguestfs-1.18.1						    2013-12-07							   virt-tar-out(1)
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