Sponsored Content
Top Forums Shell Programming and Scripting check whether the value changes or not! Post 302364954 by TehOne on Saturday 24th of October 2009 04:58:03 PM
Old 10-24-2009
I ain't sure what you really want, but try this:

Code:
NUMBER=`cat abc.txt`

if [ ! -f ~/tmp.file ]; then
    touch ~/tmp.file
    echo "$NUMBER:1" >> ~/tmp.file
    echo "First number saved, variable set to 1"
    exit
else
    OLDNUMBER=`cat ~/tmp.file | awk -F":" '{print $1}'`
    VARIABLE=`cat ~/tmp.file | awk -F":" '{print $2}'`
    if [ "$OLDNUMBER" != "$NUMBER" ]; then
        VARIABLE2=$(( $VARIABLE + 1 ))
        cat /dev/null > ~/tmp.file
        echo "$NUMBER:$VARIABLE2" >> ~/tmp.file
        echo "New variable: $VARIABLE2"
    else
        echo "Number hasn't changed, variable stays $VARIABLE"
    fi
fi

 

8 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Script to check for a file, check for 2hrs. then quit

I wish to seach a Dir for a specific file, once the file is found i will perform additional logic. If the file is not found within two hours, i would like to exit. Logically, I'm looking for the best way to approach this Thanks for any assistance in advance. Note: I'm using a C shell and... (2 Replies)
Discussion started by: mmarsh
2 Replies

2. UNIX for Dummies Questions & Answers

is there any way to check if some ip is taken ?

hello is there any tool in unix that will indicate if some ip is already taken by other machine? (4 Replies)
Discussion started by: umen
4 Replies

3. Shell Programming and Scripting

script to check if another script is running and if so, then sleep for sometime and check again

Hi, I am a unix newbie. I need to write a script to check wheteher another script is still running. If it is, then sleep for 30m and then check again if the script is running. If the script has stopped running then, I need to come out of the loop. I am using RHEL 5.2 (2 Replies)
Discussion started by: mathews
2 Replies

4. UNIX for Advanced & Expert Users

Check EOF char in Unix. OR To check file has been received completely from a remote system

Advance Thanks. (1) I would like to know any unix/Linux command to check EOF char in a file. (2) Or Any way I can check a file has been reached completely at machine B from machine A. Note that machine A ftp/scp the file to machine B at unknown time. (5 Replies)
Discussion started by: alexalex1
5 Replies

5. Shell Programming and Scripting

check if it's there

Dear, I want to check if the file in the if code is there, but I don't know how to do it? if Can someone assist me please? Thanks! kopie() { echo " Geef de naam van bestand + plaats vanwaar gekopieerd moet worden en waarnaar : " echo -n " Plaats : " read plaats ... (7 Replies)
Discussion started by: yadeki
7 Replies

6. Shell Programming and Scripting

check in and check out comments

Hi Do you know how can I get all check in and check out comments for a period of time with Surround SCM CLI ---------- Post updated at 02:00 AM ---------- Previous update was at 01:56 AM ---------- Do you have NAnt tasks that allow us to access Evolution from an NAnt build script? (0 Replies)
Discussion started by: saku
0 Replies

7. Shell Programming and Scripting

Perl code to check date and check files in particular dir

Hi Experts, I am checking how to get day in Perl. If it is “Monday” I need to process…below is the pseudo code. Can you please prove the code for below condition. if (today=="Monday" ) { while (current_time LESS THAN 9:01 AM) ... (1 Reply)
Discussion started by: ajaypatil_am
1 Replies

8. Shell Programming and Scripting

Check

echo "2012-12-26--14.8224 2012-12-27--14.2898 2012-12-28--14.9180 2012-12-29--13.3637 2012-12-30--13.7091" the set of numbers i provided above is separated by spaces. how do i count how many sets there are? i tried: echo "2012-12-26--14.8224 2012-12-27--14.2898 2012-12-28--14.9180... (5 Replies)
Discussion started by: SkySmart
5 Replies
SHCOMP(1)						       Korn shell utilities							 SHCOMP(1)

NAME
shcomp - compile a shell script SYNOPSIS
shcomp [ options ] [infile [outfile]] DESCRIPTION
Unless -D is specified, shcomp takes a shell script, infile, and creates a binary format file, outfile, that ksh can read and execute with the same effect as the original script. Since aliases are processed as the script is read, alias definitions whose value requires variable expansion will not work correctly. If -D is specified, all double quoted strings that are preceded by $ are output. These are the messages that need to be translated to locale specific versions for internationalization. If outfile is omitted, then the results will be written to standard output. If infile is also omitted, the shell script will be read from standard input. OPTIONS
[D dictionary] Generate a list of strings that need to be placed in a message catalog for internationalization. [n noexec] Displays warn- ing messages for obsolete or non-conforming constructs. [v verbose] Displays input from infile onto standard error as it reads it. EXIT STATUS
0 Successful completion. >0 An error occurred. SEE ALSO
ksh(1) IMPLEMENTATION
version shcomp (AT&T Research) 2003-03-02 author David Korn <dgk@research.att.com> copyright Copyright (c) 1982-2010 AT&T Intellectual Property license http://www.opensource.org/licenses/cpl1.0.txt 2003-03-02 SHCOMP(1)
All times are GMT -4. The time now is 04:53 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy