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how to access variables in a config file inside a shell script

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Top Forums Shell Programming and Scripting how to access variables in a config file inside a shell script
# 8  
Old 06-16-2009
no need that many tools. use just awk
Code:
set -- $(awk -F"=" '$1=="a"{ram=$2}
$1=="b"{shaym=$2}
$1=="c"{hari=$2}
END{
 print ram,shaym,hari
}' file)
echo $1
echo $2
echo $3

with bash
Code:
while IFS="=" read -r a b
do
 case $a in
 "a") ram=$b;;
 "b") shyam=$b;;
 "c") hari=$b;;
 esac
done < file
echo $ram,$shyam,$hari
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LEARN ABOUT DEBIAN

schroot-script-config

SCHROOT-SCRIPT-CONFIG(5)					   Debian sbuild					  SCHROOT-SCRIPT-CONFIG(5)

NAME

       schroot-script-config - schroot chroot setup script configuration

DESCRIPTION

       schroot	uses  scripts  to set up and then clean up the chroot environment.  These scripts may be customised using the script-config key in
       /etc/schroot/schroot.conf.  This key specifies a file which the setup scripts will source when they are run.  The file is  a  Bourne  shell
       script, and in consequence may contain any valid shell code, in addition to simple variable assignments.  This will, for example, allow be-
       haviour to be customised according to the specific chroot type or name.

       This file is deprecated, but is still used if present; it will be obsoleted and removed in a future release.  All the settings in this file
       are  now settable using configuration keys in schroot.conf, as detailed below.  Existing configuration should be modified to use these keys
       in place of this file.

ENVIRONMENT

       The environment is the same as for all setup scripts, described in schroot-setup(5).

VARIABLES

       The following variables may be set to configure setup script behaviour.	Note that new variables may be added in future	releases.   Third-
       party  extensions  to  schroot  which  add  their own setup scripts may add additional variables which are not documented here; consult the
       extension documentation for further details.

       SETUP_COPYFILES
	      A file containing a list of files to copy into the chroot (one file per line).  The file will have the same absolute location inside
	      the chroot.  Note that this is settable using the setup.copyfiles key.

       SETUP_FSTAB
	      The filesystem table file to be used to mount filesystems within the chroot.  The format of this file is the same as for /etc/fstab,
	      documented in fstab(5).  The only difference is that the mountpoint path fs_dir is relative to the chroot,  rather  than	the  root.
	      Note  that  this is settable using the setup.fstab key.  Also note that mountpoints are canonicalised on the host, which will ensure
	      that absolute symlinks point inside the chroot, but complex paths containing multiple symlinks may be resolved  incorrectly;  it	is
	      advised to not use nested symlinks as mountpoints.

       SETUP_NSSDATABASES
	      A  file  listing	the  system databases to copy into the chroot.	The default databases are 'passwd', 'shadow', 'group', 'services',
	      'protocols', 'networks', and 'hosts'.  'gshadow' is not yet copied by default, due to not being supported by all but the most recent
	      version of the GNU C library.  The databases are copied using getent(1) so all database sources listed in /etc/nsswitch.conf will be
	      used for each database.  Note that this is settable using the setup.nssdatabases key.

AUTHORS

       Roger Leigh.

COPYRIGHT

       Copyright (C) 2005-2012	Roger Leigh <rleigh@debian.org>

       schroot is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as	published  by  the
       Free Software Foundation, either version 3 of the License, or (at your option) any later version.

SEE ALSO

       sbuild(1), schroot(1), sh(1), schroot.conf(5), schroot-setup(5).

Version 1.6.4							    27 Oct 2012 					  SCHROOT-SCRIPT-CONFIG(5)