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Full Discussion: Grep through a .tar file without untarring it
Top Forums UNIX for Dummies Questions & Answers Grep through a .tar file without untarring it Post 302935456 by bakunin on Monday 16th of February 2015 05:12:22 PM
Old 02-16-2015
@agent.kgb:

You don't need GNU-tar, it is possible with a standard tar too by untarring to stdout:

Code:
 tar xf - /path/to/file.tar | grep "<what-you-search>"

@sanjaydubey2006:

As far as i can see agent.kgb (and the other people in the second thread you opened) have given you very sound advice. If you still are not able to do what you want to do there are two possible reasons:

Either you have not described your problem well. Instead of having asked for what you really want to do you asked for something you thought you might need to do what you want to do. Analysing a problem correctly at least to the point where one is able to concisely state what the problem is is trait you absolutely will need as a systems administrator - especially a UNIX systems administrator. Think about that.

Or - and this would pose an even greater problem - you absolutely have no idea how what you want to do is done and expect us to give you a turn-key solution. Now, i hate to break the news to you, but we cannot teach you the basics of script programming in specifc, programming in general and how a UNIX system works over the internet in a forum. This is simply not the right place for such an endeavour and i suggest you get a good book about this, take some classes or whatever means of getting tought about the topic is available for you. If this will leave specific questions you will be welcome to ask them here and get answers.

Second: we want to help, but we cannot do your work for you. We all have jobs of our own and cannot do yours. We can help you to help yourself but this is "UNIX for beginners", not "have your script written for you by willing volunteers".

There i suggest you rethink your attitude and/or the correlation of job requirements in contrast to your expertise and start over.

I hope this helps.

bakunin
This User Gave Thanks to bakunin For This Post:
sanjaydubey2006
 

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LEARN ABOUT REDHAT

smbtar

SMBTAR(1)																 SMBTAR(1)

NAME

       smbtar - shell script for backing up SMB/CIFS shares  directly to UNIX tape drives

SYNOPSIS

       smbtar  -s server [ -p password ]  [ -x services ]  [ -X ]  [ -d directory ]  [ -u user ]  [ -t tape ]  [ -t tape ]  [ -b blocksize ]  [ -N
       filename ]  [ -i ]  [ -r ]  [ -l loglevel ]  [ -v ]  filenames

DESCRIPTION

       This tool is part of the  Samba suite.

       smbtar is a very small shell script on top of smbclient(1) which dumps SMB shares directly to tape.

OPTIONS

       -s server
	      The SMB/CIFS server that the share resides upon.

       -x service
	      The share name on the server to connect to.  The default is "backup".

       -X     Exclude mode. Exclude filenames... from tar create or restore.

       -d directory
	      Change to initial directory before restoring / backing up files.

       -v     Verbose mode.

       -p password
	      The password to use to access a share.  Default: none

       -u user
	      The user id to connect as. Default: UNIX login name.

       -t tape
	      Tape device. May be regular file or tape device. Default: $TAPE environmental variable; if not set, a file called tar.out .

       -b blocksize
	      Blocking factor. Defaults to 20. See tar(1) for a fuller explanation.

       -N filename
	      Backup only files newer than filename. Could be used (for example) on a log file to implement incremental backups.

       -i     Incremental mode; tar files are only backed up if they have the archive bit set. The archive bit is reset after each file is read.

       -r     Restore. Files are restored to the share from the tar file.

       -l log level
	      Log (debug) level. Corresponds to the -d flag of smbclient(1) .

ENVIRONMENT VARIABLES

       The $TAPE variable specifies the default tape device to write to. May be overridden with the -t option.

BUGS

       The smbtar script has different options from ordinary tar and tar called from smbclient.

CAVEATS

       Sites that are more careful about security may not like the way the script handles PC passwords. Backup and restore work on entire  shares,
       should work on file lists. smbtar works best with GNU tar and may not work well with other versions.

DIAGNOSTICS

       See the DIAGNOSTICS section for the smbclient(1)
	command.

VERSION

       This man page is correct for version 2.2 of the Samba suite.

SEE ALSO

       smbd(8) smbclient(1) smb.conf(5)

AUTHOR

       The  original  Samba  software  and  related utilities were created by Andrew Tridgell. Samba is now developed by the Samba Team as an Open
       Source project similar to the way the Linux kernel is developed.

       Ricky Poulten <URL:mailto:poultenr@logica.co.uk> wrote the tar extension and this man page. The smbtar script  was  heavily  rewritten  and
       improved  by  Martin  Kraemer  <URL:mailto:Martin.Kraemer@mch.sni.de>.  Many thanks to everyone who suggested extensions, improvements, bug
       fixes, etc. The man page sources  were  converted  to  YODL  format  (another  excellent  piece	of  Open  Source  software,  available	at
       ftp://ftp.icce.rug.nl/pub/unix/ <URL:ftp://ftp.icce.rug.nl/pub/unix/>) and updated for the Samba 2.0 release by Jeremy Allison. The conver-
       sion to DocBook for Samba 2.2 was done by Gerald Carter.

								 19 November 2002							 SMBTAR(1)
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