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Top Forums Shell Programming and Scripting Do While Loop + Read From File + assign line to a variable Post 302937861 by ParthThakkar on Tuesday 10th of March 2015 08:41:02 AM
Old 03-10-2015
Question Do While Loop + Read From File + assign line to a variable

Hello,
I am using below code for reading from a file and assigning the values to a variable , but it is loosing the value after the loop , please suggest to retain the value of the variable after the loop ,
Code:
while IFS=: read -r line
do
set $dsc=$line
echo 'printing line variable ' $line
done < emp_csv.txt
echo 'printing dsc varaiable' $dsc

 

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DCMD(1) 						      General Commands Manual							   DCMD(1)

NAME
dcmd - expand file lists of .dsc/.changes files in the command line SYNOPSIS
dcmd [options] [command] [changes-file|dsc-file] [...] DESCRIPTION
dcmd replaces any reference to a .dsc or .changes file in the command line with the list of files in its 'Files' section, plus the file itself. It allows easy manipulation of all the files involved in an upload (for changes files) or a source package (for dsc files). If command is omitted (that is the first argument is an existing .dsc or .changes file), the expanded list of files is printed to stdout, one file by line. Useful for usage in backticks. OPTIONS
There are a number of options which may be used in order to select only a subset of the files listed in the .dsc or .changes file. If a requested file is not found, an error message will be printed. --dsc Select the .dsc file. --schanges Select .changes files for the 'source' architecture. --bchanges Select .changes files for binary architectures. --changes Select .changes files. Implies --schanges and --bchanges. --archdeb Select architecture-dependent binary packages (.deb files). --indepdeb Select architecture-independent binary packages (.deb files). --deb Select binary packages (.deb files). Implies --archdeb and --indepdeb. --archudeb Select architecture-dependent udeb binary packages. --indepudeb Select architecture-independent udeb binary packages. --udeb Select udeb binary packages. Implies --archudeb and --indepudeb. --tar, --orig Select the tar file. --diff Select the Debian diff file. Each option may be prefixed by --no to indicate that all files not matching the specification should be selected. It is not possible to combine positive filtering options (e.g. --dsc) and negative filtering options (e.g. --no-changes) in the same dcmd invocation. --no-fail-on-missing, -r If any of the requested files were not found, do not output an error. EXAMPLES
Copy the result of a build to another machine: $ dcmd scp rcs_5.7-23_amd64.changes elegiac:/tmp rcs_5.7-23.dsc 100% 490 0.5KB/s 00:00 rcs_5.7-23.diff.gz 100% 12KB 11.7KB/s 00:00 rcs_5.7-23_amd64.deb 100% 363KB 362.7KB/s 00:00 rcs_5.7-23_amd64.changes 100% 1095 1.1KB/s 00:00 $ $ dcmd --diff --deb scp rcs_5.7-23_amd64.changes elegiac:/tmp rcs_5.7-23.diff.gz 100% 12KB 11.7KB/s 00:00 rcs_5.7-23_amd64.deb 100% 363KB 362.7KB/s 00:00 $ Check the contents of a source package: $ dcmd md5sum rcs_5.7-23.dsc 8fd09ea9654cda128f8d5c337d3b8de7 rcs_5.7.orig.tar.gz f0ceeae96603e823eacba6721a30b5c7 rcs_5.7-23.diff.gz 5241db1e231b1f43ae5514b63d2523f8 rcs_5.7-23.dsc $ $ dcmd --no-diff md5sum rcs_5.7-23.dsc 8fd09ea9654cda128f8d5c337d3b8de7 rcs_5.7.orig.tar.gz 5241db1e231b1f43ae5514b63d2523f8 rcs_5.7-23.dsc $ SEE ALSO
dpkg-source(1), dpkg-genchanges(1). AUTHOR
This program was written by Romain Francoise <rfrancoise@debian.org> and is released under the GPL, version 2 or later. DEBIAN
Debian Utilities DCMD(1)
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