Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Question about a basic shell script: How to make sure it receives only one input?
Top Forums Shell Programming and Scripting Question about a basic shell script: How to make sure it receives only one input? Post 302577395 by mirni on Tuesday 29th of November 2011 02:48:07 AM
Old 11-29-2011
If you want only one argument, then you can do a check like this:
Code:
if [[ $# -ne 1 ]] ; then   #-ne  not equals
  echo "I need just 1 argument. No more, no less." 
  exit 1
fi

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

basic shell scripting question

If I did indeed grep something out of it, why woudln't $result show nothing? When I do $? , it does show success... What is the proper syntax so that $result shows actual thing it's grepping out? result=`(ssh $host tail -1 /something/somethingelse) | egrep -i "value" >dev/null` #echo... (3 Replies)
Discussion started by: convenientstore
3 Replies

2. Shell Programming and Scripting

need a quick basic shell script help

im trying to run the below if command ifconfig -a |grep 10.100.120.21 gives me below output inet addr:10.100.120.21 Bcast:10.100.120.255 Mask:255.255.255.0 i just want a basic shell which says if above exists then continue how would i do this? (6 Replies)
Discussion started by: eb222
6 Replies

3. Shell Programming and Scripting

Basic script question

I'm trying to approach a problem but all I'm coming up with are complex ways to manipulate the data. But still not getting the desired outcome. directory of files.... file-100-foo file-100-man file-100-chu Need to copy the files and increment the number in the file name ... (4 Replies)
Discussion started by: suphawk
4 Replies

4. Shell Programming and Scripting

Basic Shell Script Help

Lets say I wanted to create a script that would show what people are doing on my machine using the w command and refresh in about 6 seconds. What would be the easiest way to do this? I pretty much want the script to loop until I stop it. I'm using the BASH shell by the way. Help is appreciated.... (1 Reply)
Discussion started by: c4391
1 Replies

5. Shell Programming and Scripting

Basic shell script help

Im trying to make a script that simply adds a word to the last available line in a txt file without overwriting any previous lines. Ive googled this and there are great examples but no one explain what each function does, and i dont entirely understand how it works. Basically Im looking for... (7 Replies)
Discussion started by: kylecn
7 Replies

6. Shell Programming and Scripting

Help! Basic shell script advice

##### (2 Replies)
Discussion started by: AidoPotato
2 Replies

7. Shell Programming and Scripting

Basic question on shell script execution

I have two shell scripts in the different directories listed below, /root/dev/dir1/test.sh /root/dev/dir2/master.sh I am executing the master.sh script from the test.sh like below and getting 'Permission denied' error. #! /bin/sh #test.sh path='/root/dev' $path/dir2/master.sh But it... (2 Replies)
Discussion started by: vel4ever
2 Replies

8. Shell Programming and Scripting

Deleting all the parallel processes launched when the main script receives a ctrl+c

Hi, I have a shell script that creates 2 parallel processes. When I press ctrl+c, i want the parallel process to get killed as well. #!/bin/bash cmd1="script1.py" cmd2="script2.py" ${cmd1} & pid1=$! echo ${pid1} ${cmd2} & pid2=$! (7 Replies)
Discussion started by: sana.usha
7 Replies

9. UNIX for Dummies Questions & Answers

Basic loop awk/shell script question..

Hi, Sorry if this is a newbie question. I guess you can use either awk or shell script for this sequence of operations, but knowing very little about either of them I'm not sure how I should try to write this. The basic objective is to copy certain files that are scattered all over my... (10 Replies)
Discussion started by: pc2001
10 Replies

10. Shell Programming and Scripting

Basic Combination Shell Script

I need to have a script read a file that has a list of words in a single column like below:Black Blue Brown Orange Red Yellow Green White Purple Silver Grey Tan Then print to another file just all of the two-word possible combinations. Example: Black,Blue Anyone want to take a... (4 Replies)
Discussion started by: vespasian
4 Replies

LEARN ABOUT MOJAVE

locale::codes::langfam5.18

Locale::Codes::LangFam(3pm)				 Perl Programmers Reference Guide			       Locale::Codes::LangFam(3pm)

NAME

       Locale::Codes::LangFam - standard codes for language extension identification

SYNOPSIS

	  use Locale::Codes::LangFam;

	  $lext = code2langfam('apa');		       # $lext gets 'Apache languages'
	  $code = langfam2code('Apache languages');    # $code gets 'apa'

	  @codes   = all_langfam_codes();
	  @names   = all_langfam_names();

DESCRIPTION

       The "Locale::Codes::LangFam" module provides access to standard codes used for identifying language families, such as those as defined in
       ISO 639-5.

       Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default ISO 639-5
       language family codes will be used.

SUPPORTED CODE SETS

       There are several different code sets you can use for identifying language families. A code set may be specified using either a name, or a
       constant that is automatically exported by this module.

       For example, the two are equivalent:

	  $lext = code2langfam('apa','alpha');
	  $lext = code2langfam('apa',LOCALE_LANGFAM_ALPHA);

       The codesets currently supported are:

       alpha
	   This is the set of three-letter (lowercase) codes from ISO 639-5 such as 'apa' for Apache languages.

	   This is the default code set.

ROUTINES

       code2langfam ( CODE [,CODESET] )
       langfam2code ( NAME [,CODESET] )
       langfam_code2code ( CODE ,CODESET ,CODESET2 )
       all_langfam_codes ( [CODESET] )
       all_langfam_names ( [CODESET] )
       Locale::Codes::LangFam::rename_langfam  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Codes::LangFam::add_langfam  ( CODE ,NAME [,CODESET] )
       Locale::Codes::LangFam::delete_langfam  ( CODE [,CODESET] )
       Locale::Codes::LangFam::add_langfam_alias  ( NAME ,NEW_NAME )
       Locale::Codes::LangFam::delete_langfam_alias  ( NAME )
       Locale::Codes::LangFam::rename_langfam_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangFam::add_langfam_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangFam::delete_langfam_code_alias  ( CODE [,CODESET] )
	   These routines are all documented in the Locale::Codes::API man page.

SEE ALSO

       Locale::Codes
	   The Locale-Codes distribution.

       Locale::Codes::API
	   The list of functions supported by this module.

       http://www.loc.gov/standards/iso639-5/id.php
	   ISO 639-5 .

AUTHOR

       See Locale::Codes for full author history.

       Currently maintained by Sullivan Beck (sbeck@cpan.org).

COPYRIGHT

	  Copyright (c) 2011-2013 Sullivan Beck

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.18.2							    2013-11-04					       Locale::Codes::LangFam(3pm)
All times are GMT -4. The time now is 06:12 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy