Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Help Running a Check in Bash Script
Top Forums UNIX for Dummies Questions & Answers Help Running a Check in Bash Script Post 302510428 by Duo11 on Sunday 3rd of April 2011 11:51:12 PM
Old 04-04-2011
Question Help Running a Check in Bash Script
Hey guys, so I wrote a small script that pretty much just takes in two numbers and counts from the first to the second, e.g.
Code:
unknown-hacker|544> count.sh 1 3
1
2
3

My problem is I want to make it so that if you input invalid parameters, such as non-numerical characters, more than 2 numbers, etc., you'd get an error message. Any suggestions? Thanks in advance.

Edit: Here's what my script looks like so far:
Code:
#!/bin/bash

declare -i INDEX
declare -i RESULTS
if [ $1 -gt $2 ]; then
    INDEX=$1
    while [[ $INDEX -gt $2 ]] || [[ $INDEX -eq $2 ]]; do
        echo $INDEX
        INDEX=$INDEX-1
    done
elif [ $1 -le $2 ]; then
    INDEX=$1
    while [[ $INDEX -le $2 ]] || [[ $INDEX -eq $2 ]]; do
        echo $INDEX
        INDEX=$INDEX+1
    done
else
    echo $1

Last edited by Scott; 04-04-2011 at 02:37 AM.. Reason: Code tags, please...
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

check that script is not running twice

using ps -ef | fgrep "ld_data" how do i write a script to check that it didn't already run Thanks (2 Replies)
Discussion started by: Link_02
2 Replies

2. Shell Programming and Scripting

Running a check platform script

Hi, I want to run a check platform & application script under ksh (Soaris boxes). It runs some commands and it take some time. I want to customize it like that: - output is too big, hence I want some output of the commands to be redirect ed in an output file (or maybe two or three) - not... (4 Replies)
Discussion started by: heartwork
4 Replies

3. Shell Programming and Scripting

script to check if process is running

How do I make a shell script to see if a certain process is running. The process shows up on ps aux as /usr/sbin/daemon eg: if /usr/sbin/daemon else #nothin basically i want to run the process if it isnt running/ has been stopped. Thanks. (2 Replies)
Discussion started by: daydreamer
2 Replies

4. 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

5. Shell Programming and Scripting

Script to check running of process

Hi, Can anyone please tell me how to write a shell script to check whether a process if running or not.... if its still running then wait for sometime and if not then run the next query. Also, Under my one main script main.sh I have to run 2 scripts simutaneously which take some time to... (2 Replies)
Discussion started by: lovepujain
2 Replies

6. Shell Programming and Scripting

bash script to check if a program is running

I'm a bit new to bash programming and I was assigned the job of writing a script that will check to see if a program server is running and to restart the program if it is not up. The script is supposed to check the program every hour (which I have looked up and I believe I know how to do) and send... (3 Replies)
Discussion started by: mcknz
3 Replies

7. Shell Programming and Scripting

Bash shell script to check if script itself is running

hi guys we've had nagios spewing false alarm (for the umpteenth time) and finally the customer had enough so they're starting to question nagios. we had the check interval increased from 5 minutes to 2 minutes, but that's just temporary solution. I'm thinking of implementing a script on the... (8 Replies)
Discussion started by: hedkandi
8 Replies

8. UNIX for Dummies Questions & Answers

[Solved] How to Check if a script is running?

Hi All, I am new to Unix... Can you please let me know how we can check if a script is running or not on Solaris box? (4 Replies)
Discussion started by: Rahul466
4 Replies

9. Shell Programming and Scripting

Check to see if script is already running

Happy New Year Is there a quick way to check to see if a script is already running. I want to put in a check in the script to exit, if already running. Currerntly i can only think of doing it the following way. # ps -ef | grep -i 3_HOUSEKEEPING_FFTVTL_TO_FFTDSSU_DUPLICATION.ksh |... (5 Replies)
Discussion started by: Junes
5 Replies

10. UNIX for Beginners Questions & Answers

How to check if the script is already running?

I have one shell script in NAS shared location. Since NAS is mounted in many servers, script can be run from any of those servers. I want to make sure if the script is already running, it should not allow others to run it. I googled it and got some idea that i can touch one empty file in the... (8 Replies)
Discussion started by: thomasraj87
8 Replies

LEARN ABOUT DEBIAN

empty-page

EMPTY-PAGE(1)							 ExactImage Manual						     EMPTY-PAGE(1)

NAME

       empty-page - empty page detector of the ExactImage toolkit

SYNOPSIS

       empty-page [option...] {-i | --input} input-file

       empty-page {-h | --help}

DESCRIPTION

       ExactImage is a fast C++ image processing library. Unlike many other library frameworks it allows operation in several color spaces and bit
       depths natively, resulting in low memory and computational requirements.

       empty-page counts dark pixels of a black and white image and decides with a threshold whether the page is most probably empty, and thus can
       be removed from the image processing stream.

OPTIONS

       -i file, --input file
	   Read image from the specified file.

       -m n, --margin n
	   Set width of border margin to skip. For speed reasons, the margin has to be a multiple of 8. The default is 16.

       -p x, --percentage x
	   Set fraction of permissible dark pixels. The default is 0.05 (5%).

       -h, --help
	   Display help text and exit.

EXAMPLES

	   $ empty-page -i test.tif
	   The image has 75461 dark pixels from a total of 1060992 (7.11231%).
	   non-empty

EXIT STATUS

       The exit status is 0 if the image is mostly white, 1 otherwise.

SEE ALSO

       exactimage(7)

AUTHORS

       Jakub Wilk <jwilk@debian.org>
	   Wrote this manual page for the Debian system.

       http://www.exactcode.de/site/open_source/exactimage/
	   This manual page incorporates texts found on the ExactImage homepage.

COPYRIGHT

       This manual page was written for the Debian system (and may be used by others).

       Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 or (at
       your option) any later version published by the Free Software Foundation.

       On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL-2.

empty-page							    09/09/2013							     EMPTY-PAGE(1)
All times are GMT -4. The time now is 03:39 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy