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Full Discussion: Implementing dynamic way of editing fstab
Top Forums Shell Programming and Scripting Implementing dynamic way of editing fstab Post 302331683 by zaxxon on Tuesday 7th of July 2009 01:35:53 AM
Old 07-07-2009
Strange that "users" set quotas. Usually you can do that on Linux for example with edquota and don't really need a front end asking you parameters. Anyway here you go.

One of many ways - take it as a start and try to readup and try out the things missing.

Example:

Code:
$> cat infile
/dev/sda1               /                       ext2    defaults       1 2
/dev/sda6               /home                   ext2    defaults       1 2
/dev/sda5               /var                    ext2    defaults       1 2
$> awk '$2 ~ /^\/home/ {sub(/$/,",usrquota",$4); print; next} {print}' infile
/dev/sda1               /                       ext2    defaults       1 2
/dev/sda6 /home ext2 defaults,usrquota 1 2
/dev/sda5               /var                    ext2    defaults       1 2

For keeping a formatted output you might want to work with printf instead of print though.
Variables you got via read for example from your "users" you can use with the -v option inside awk for example.

If those "users" may not be root etc. you might want to setup sudo for them so they can use edquota instead.
 

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LEARN ABOUT SUSE

extlinux

extlinux(1)						      General Commands Manual						       extlinux(1)

NAME

       extlinux - install the SYSLINUX bootloader on a ext2/ext3 filesystem

SYNOPSIS

       extlinux [options] directory

DESCRIPTION

       EXTLINUX is a new syslinux derivative, which boots from a Linux ext2/ext3 filesystem.  It works the same way as SYSLINUX, with a few slight
       modifications.  It is intended to simplify first-time installation of Linux, and for creation of  rescue  and  other  special-purpose  boot
       disks.

       The  installer is designed to be run on a mounted directory.  For example, if you have an ext2 or ext3 usb key mounted on /mnt, you can run
       the following command:

	      extlinux --install /mnt

OPTIONS

       -H, --heads=#
	      Force the number of heads.

       -i, --install
	      Install over the current bootsector.

       -O, --clear-once
	      Clear the boot-once command.

       -o, --once=command
	      Execute a command once upon boot.

       -r, --raid
	      Fall back to the next device on boot failure.

       --reset-adv
	      Reset auxiliary data.

       -S, --sectors=#
	      Force the number of sectors per track.

       -U, --update
	      Updates a previous EXTLINUX installation.

       -z, --zip
	      Force zipdrive geometry (-H 64 -S 32).

BUGS

       I would appreciate hearing of any problems you have with SYSLINUX.  I would also like to hear from you if you have successfully	used  SYS-
       LINUX, especially if you are using it for a distribution.

       If  you	are reporting problems, please include all possible information about your system and your BIOS; the vast majority of all problems
       reported turn out to be BIOS or hardware bugs, and I need as much information as possible in order to diagnose the problems.

       There is a mailing list for discussion among SYSLINUX users and for announcements of new and test versions. To  join,  send  a  message	to
       majordomo@linux.kernel.org with the line:

SEE ALSO

       syslinux(1)

SYSLINUX for ext2/ext3 filesystem				 18 December 2007						       extlinux(1)
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