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Full Discussion: how to check if file is zipped
Top Forums UNIX for Dummies Questions & Answers how to check if file is zipped Post 302109585 by dennis.jacob on Tuesday 6th of March 2007 10:56:56 PM
Old 03-06-2007
You can also use the below gzip options to verify that file is compressed.

-l option will give you the details of compression.
-t will check the integrity of the zipped file

You can incorporate the same in the script something like below:

gzip -t file 2>/dev/null
[[ $? -eq 0 ]]&&echo "Compessed file" || echo "Not compressed"
 

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LEARN ABOUT DEBIAN

cvssuck

CVSSUCK(1)						      General Commands Manual							CVSSUCK(1)

NAME

       cvssuck - inefficient cvs repository grabber using cvs command

SYNOPSIS

       cvssuck [-h] [-b] [-s] [-v] [-D debug-option,...]  cvsroot [-o output-directory|-O output-base] [-l lock-directory|-L lock-base] module ...

DESCRIPTION

       CVSsuck is a mirroring tool for cvs repositories.  Unlike other tools such as CVSup or rsync, it uses cvs command to access the repository.
       So, it works well with remote repositories without a special server or shell account.  However it is inefficient and  not  perfect  because
       cvs  client/server  protocol  is not designed for mirroring.  If a server provides special way to grab a repository, you shouldn't use CVS-
       suck.

OPTIONS

       -h     prints help message.

       -b     makes CVSsuck to traverse directories in breadth first.  CVSsuck traverses directory in depth first by default.

       -s     specifies skeleton mode.	In this mode, CVSsuck grabs only first revision of the trunk, 1.1,  branchpoints,  head  of  branches  and
	      tagged revisions.  Note that first two (first revision of the trunk and 1.1) is identical in usual case.

       -v     makes CVSsuck verbosely.	This is same as `-D command,attic,leavetmp'.

       -D debug-option,...
	      specifies debug options.	Available debug options are listed by `cvssuck -h'.

       -o output-directory
	      specifies the directory to store grabbed repository.  A remote RCS file module/dir/file,v in cvsroot will be stored in output-direc-
	      tory/dir/file,v.

       -O output-base
	      specifies the base directory to store grabbed repository.  A remote RCS file module/dir/file,v in cvsroot will be stored in  output-
	      base/module/dir/file,v.	-o  and  -O  is exclusive.  The last specified before module is effective.  By default, CVSsuck behaves as
	      that current directory is specified with -O.

       -l lock-directory
	      specifies the directory of CVS style lock.

       -L lock-base
	      specifies the base directory of CVS style lock.  -l and -L is exclusive.	A lock directory  should  be  specified  after	an  output
	      directory.   The	last specified before module after an output directory is effective.  By default, CVSsuck assumes a lock directory
	      is same as output directory.

EXAMPLES

       % cvssuck :pserver:anonymous@cvs.m17n.org:/cvs/cvs cvssuck

       grabs the module cvssuck in the repository :pserver:anonymous@cvs.m17n.org:/cvs/cvs into the directory cvssuck.

       % cvssuck :pserver:anonymous@cvs.m17n.org:/cvs/cvs cvssuck cvs-info

       grabs the modules cvssuck and cvs-info.

       % cvssuck :pserver:anonymous@cvs.m17n.org:/cvs/cvs -O $HOME/.cvsroot cvssuck

       grabs the module cvssuck into $HOME/.cvsroot/cvssuck.

       % cvssuck :pserver:anonymous@cvs.m17n.org:/cvs/cvs -O $HOME/.cvsroot -L $HOME/.cvslock cvssuck

       grabs the module cvssuck into $HOME/.cvsroot/cvssuck with the lock directory $HOME/.cvslock/cvssuck.

       % cvssuck :pserver:anonymous@cvs.m17n.org:/cvs/cvs -o $HOME/.cvsroot/cvs/suck cvssuck

       grabs the module cvssuck into $HOME/.cvsroot/cvs/suck.

       % cvssuck -s :pserver:anonymous@cvs.m17n.org:/cvs/cvs cvssuck

       grabs needy revisions (skeleton) of the module cvssuck.

SEE ALSO

       http://cvs.m17n.org/~akr/cvssuck/

       cvs(1), rcs(1), cvsup(1), rsync(1)

AUTHORS

       Tanaka Akira <akr@m17n.org>.

BUGS

       It's inefficient.

       It's not perfect because revisions stated as `dead' cannot be retrieved.  However it is not observable until the state is changed  by  `cvs
       admin -s'.

								 25 September 2000							CVSSUCK(1)
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