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Full Discussion: Question in bash script.
Top Forums Shell Programming and Scripting Question in bash script. Post 302838551 by Aviel.shani on Tuesday 30th of July 2013 03:37:26 AM
Old 07-30-2013
Question in bash script.
Hi All,
I need an assistance with the issue below.
I wrote big script in "bash" that automatically install an LDAP on Clients.
I'd be happy to know in order to avoid duplication of entries in files,
How i can define into the script, if the specific expressions already exist in the file, do not add them again.
For example i take the following section from the script :
Code:
echo "admin ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
echo "%linuxadmin ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers

How i define in the script , only if the value are already exists in the file , do not add it again.
i have the same thing with sections that write expressions to more files.
The thing is that i sometimes i need to run the script more than once on the same server,and as a result of that it created duplicate values ​​in multiple files.
Thank you guys,

Aviel.
Last edited by Scott; 07-30-2013 at 05:12 AM.. Reason: Removed excessive formatting; added code tags
 

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LEARN ABOUT OSF1

uudemon

uudemon(4)						     Kernel Interfaces Manual							uudemon(4)

NAME

       uudemon.admin,  uudemon.cleanu,	uudemon.hour,  uudemon.poll  -	Administrative shell scripts for polling remote systems, cleaning up spool
       directories, reporting status to the system administrator, and routine invocations of the uuxqt and uusched daemons

SYNOPSIS

       These shell scripts reside in the following directory:
	  /usr/lib/uucp

DESCRIPTION

       All the scripts can be run from the command line or can be run automatically by the cron daemon. To automatically run the  scripts,  remove
       the comment character (#) from the beginning of the relevant line in the /var/spool/cron/crontabs/uucp file.

       This  script  reports  status  to  the system administrator. It issues the uustat command to find out the status of uucp jobs. It mails the
       results to the uucp login ID. The script may be modified to send mail to any login ID such as the uucp administrative login ID  (uucpa)	or
       root.  This script cleans up the /var/spool/uucp and /var/spool/uucppublic directories by running the uucleanup command. The uucleanup com-
       mand is run with the following parameters: -C7, -D7, X2, -o2, -W1.  This script runs the uusched and uuxqt daemons in the background.  This
       script  polls  the  systems  listed  in	the  /usr/lib/uucp/Poll file.  The uudemon.poll script should be scheduled before the uudemon.hour
       script. This allows uudemon.poll to create any command files before cron runs the uudemon.hour script.

FILES

       Contains the uudemon.admin, uudemon.cleanu, uudemon.hour and uudemon.poll files.  Contains the uucp file.

RELATED INFORMATION

       Commands: cron(8), uucleanup(8), uusched(8), uuxqt(1)

       Files: /usr/lib/uucp delim off

																	uudemon(4)
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