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Full Discussion: Bash Script Help...search then read from file: change text and pipe back...
Top Forums Shell Programming and Scripting Bash Script Help...search then read from file: change text and pipe back... Post 302557876 by serverfull on Thursday 22nd of September 2011 09:59:33 AM
Old 09-22-2011
Bash Script Help...search then read from file: change text and pipe back...
Hello,

I am trying to make a bash script that can pull data from a file and then change one part of said data.

I want to search by username and pull the full line. That way there is a way to replace just one part of that line then return it back to the file.

My Data is stored like:

Code:
john.smith|Smith, John|DATA1|DATA2|DATA3|DATA4|DATA5

There are 120 lines like that. So lets say I want to Search for John Smith. Return that line and just change the text between the | 's at DATA3 then write it back to the original file.

There could be more then one user using this script at once (I kinda got it to work saving to a file then piping out... But I just started learning Bash scripting this month so...yeah so not very good yet.

Thanks,
Jason
 

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LEARN ABOUT DEBIAN

unshadow

UNSHADOW(8)						      System Manager's Manual						       UNSHADOW(8)

NAME

       unshadow - combines passwd and shadow files

SYNOPSIS

       unshadow password-file shadow-file

DESCRIPTION

       This  manual  page  documents briefly the unshadow command, which is part of the john package.  This manual page was written for the Debian
       GNU/Linux distribution because the original program does not have a manual page.  john, better known as John the Ripper, is a tool to  find
       weak passwords of users in a server.

       The  unshadow  tool combines the passwd and shadow files so John can use them. You might need this since if you only used your shadow file,
       the GECOS information wouldn't be used by the "single crack" mode, and also you wouldn't be able to use the '-shells' option. On  a  normal
       system you'll need to run unshadow as root to be able to read the shadow file.

SEE ALSO

       john(8), mailer(8), unafs(8), unique(8).

       The programs are documented fully by John's documentation, which should be available in /usr/share/doc/john or other location, depending on
       your system.

AUTHOR

       This manual page was written by Jordi Mallach <jordi@debian.org>, for the Debian GNU/Linux system (but may be used by others).
       John the Ripper and mailer were written by Solar Designer <solar@openwall.com>. The complete list of contributors can be found in the CRED-
       ITS file in the documentation directory.

john								   June 03, 2004						       UNSHADOW(8)
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