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Full Discussion: [Solved] Bash test 2 variables to see if ones greater by n
Top Forums Shell Programming and Scripting [Solved] Bash test 2 variables to see if ones greater by n Post 302607065 by jaysunn on Tuesday 13th of March 2012 01:07:01 PM
Old 03-13-2012
[Solved] Bash test 2 variables to see if ones greater by n
Experts,
I have a bash shell script that generates 2 variables that have the current minute and a minute from a log file. Can someone please show me the best way to test if the minutes stray by 5. So basically if:
This is ok:
Code:
Last Fitting Min
=============
02
Current Minute
=============
02

This is bad:
Code:
Last Fitting Min
=============
02
Current Minute
=============
07

I know how to test if the values are greater than each other. However I am unsure how to check if the value is greater by 5.

I hope I explained this well enough.
Here are the system details.

Code:
Kernel: 2.6.18-194.el5
GNU bash, version 3.2.25(1)-release (x86_64-redhat-linux-gnu)
Copyright (C) 2005 Free Software Foundation, Inc.

 

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LEARN ABOUT SUSE

bashbug

BASHBUG(1)						      General Commands Manual							BASHBUG(1)

NAME

       bashbug - report a bug in bash

SYNOPSIS

       bashbug [--version] [--help] [email-address]

DESCRIPTION

       bashbug	is  a shell script to help the user compose and mail bug reports concerning bash in a standard format.	bashbug invokes the editor
       specified by the environment variable EDITOR on a temporary copy of the bug report format outline. The user must fill  in  the  appropriate
       fields  and  exit  the  editor.	 bashbug  then	mails the completed report to bug-bash@gnu.org, or email-address.  If the report cannot be
       mailed, it is saved in the file dead.bashbug in the invoking user's home directory.

       The bug report format outline consists of several sections.  The first section provides information about the  machine,	operating  system,
       the  bash  version, and the compilation environment.  The second section should be filled in with a description of the bug.  The third sec-
       tion should be a description of how to reproduce the bug.  The optional fourth section is for a proposed fix.  Fixes are encouraged.

ENVIRONMENT

       bashbug will utilize the following environment variables if they exist:

       EDITOR Specifies the preferred editor. If EDITOR is not set, bashbug defaults to emacs.

       HOME   Directory in which the failed bug report is saved if the mail fails.

       TMPDIR Directory in which to create temporary files and directories.

SEE ALSO

       bash(1)

AUTHORS

       Brian Fox, Free Software Foundation
       bfox@gnu.org

       Chet Ramey, Case Western Reserve University
       chet@po.cwru.edu

GNU Bash-4.0							   1998 July 30 							BASHBUG(1)
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