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Shell Programming and Scripting
Comparing content of two variables
Post 302542874 by animesharma on Friday 29th of July 2011 12:33:08 AM
07-29-2011
Comparing content of two variables
I have very abstract need of "comparing two variables" and take subsequent actions.
please refer to image below
I have a part of script which reads a file and generates variables based on content of this file.(Variables generated in same shell)
The reason i have categorized the design in user and script environment is that the script environment must be able to handle changes made in user environment.
The changes will only be in the form of new line entries in file1.txt
I need help on how to move from desired output to final output
please refer to image below
I have a part of script which reads a file and generates variables based on content of this file.(Variables generated in same shell)
The reason i have categorized the design in user and script environment is that the script environment must be able to handle changes made in user environment.
The changes will only be in the form of new line entries in file1.txt
I need help on how to move from desired output to final output
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LEARN ABOUT DEBIAN
envstore
ENVSTORE(1) BSD General Commands Manual ENVSTORE(1) NAME
envstore -- save and restore environment variables SYNOPSIS
envstore command [args ...] DESCRIPTION
envstore can save and restore environment variables, thus transferring them between different shells. command must be one of clear Forget all stored variables eval Produce shell code for evaluation, restoring all saved variables list List saved variables in better readable format save variable [value] Save variable either with its current shell value or with value rm variable Remove variable from store Note: Only the first character of command is checked, so envstore e instead of envstore eval, envstore c for envstore clear, etc., are also valid. ENVIRONMENT
ENVSTORE_FILE The file in which the environment parameters are stored, /tmp/envstore-EUID by default, LIMITATIONS
Variable names or values must not contain null bytes or newlines. Due to limitations imposed by most shells, it is not possible to save parameters containing more than one consecutive whitespace. envstore will save and display them correctly, but unless you do IFS trickery, your shell will not be able to load them. The current maximum length (in bytes) is 255 bytes for the variable name and 1023 bytes for its content. AUTHOR
envstore was written by Daniel Friesel <derf@derf.homelinux.org>. Original idea and script by Maximilian Gass <mxey@ghosthacking.net>. SEE ALSO
envify(1) BSD
December 1, 2009 BSD