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Top Forums Shell Programming and Scripting check whether the value changes or not! Post 302364935 by marcus_kosaman on Saturday 24th of October 2009 03:58:36 PM
Old 10-24-2009
check whether the value changes or not!

HI all,

I need help in writing a shell script for the following logic

I have a file abc.txt and it contains a number x. The number in the file abc.txt changes every day. I need to develop a shell script which on every run checks the number in the file and increments a variable by 1 if a new number is found( if the number doesnt change the variable will not increment by 1).


Can any one help me out in this. Thanks!
 

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script(1)							   User Commands							 script(1)

NAME
script - make record of a terminal session SYNOPSIS
script [-a] [filename] DESCRIPTION
The script utility makes a record of everything printed on your screen. The record is written to filename. If no file name is given, the record is saved in the file typescript. See WARNINGS. The script command forks and creates a sub-shell, according to the value of $SHELL, and records the text from this session. The script ends when the forked shell exits or when Control-d is typed. OPTIONS
The following option is supported: -a Appends the session record to filename, rather than overwriting it. NOTES
script places everything that appears on the screen in filename, including prompts. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |CSI |Enabled | +-----------------------------+-----------------------------+ SEE ALSO
attributes(5) WARNINGS
script can pose a security risk when used in directories that are writable by other users (for example, /tmp), especially when run by a privileged user, that is, root. Be sure that typescript is not a link before running script. SunOS 5.11 30 Jan 2004 script(1)
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