Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: check if contents of an array is empty
Top Forums Shell Programming and Scripting check if contents of an array is empty Post 302599088 by aigles on Thursday 16th of February 2012 07:42:29 AM
Old 02-16-2012
Another way :
Code:
set -- ${a[*]}
if [ $# -eq 0 ] ; then
    echo empty
fi

Jean-Pierre.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Can I assign the contents of file into an array?

I am trying to assign the contents of file e.g ls "$HOME" into an array. If it is possible then please guide me without using the concept of awk,sed, and perl16 Thanks (10 Replies)
Discussion started by: murtaza
10 Replies

2. Shell Programming and Scripting

How to empty file contents w/o rm and touch

Hi all, Can any one tell me how to empty the contents of a file in unix without using the following sequence : rm <file> ; touch <file> is there any command in unix?? is it possible through shell scripting? If so, how? -krishna (7 Replies)
Discussion started by: kris_kris
7 Replies

3. UNIX for Dummies Questions & Answers

compare array contents with file

I have an array "arrA" with the following contents: A0012 Paint Shop.doc ES001 Contract Signature.doc Budget Plan.pdf TS PWS.pdf My data file "Files.dat" has the same contents: A0012 Paint Shop.doc ES001 Contract Signature.doc Budget Plan.pdf TS PWS.pdf I have a script that compares... (0 Replies)
Discussion started by: orahi001
0 Replies

4. UNIX for Dummies Questions & Answers

Display the contents of an array

Hi i have just registered So i am at university studying forensic computing and we have to learn c++ i have never done anything with c++ before and i am abit stuck i need to create a programme to display the contents of an array of characters forwards and in reverse Can anyone help me... (1 Reply)
Discussion started by: RossMc
1 Replies

5. Shell Programming and Scripting

Empty Directory Check

Hi All, I have a requirement to check all the files in a directory and mail non empty files Files are in csv format , i need to skip header while checking pls help Thanks (12 Replies)
Discussion started by: gwrm
12 Replies

6. Shell Programming and Scripting

Empty Multiple files contents

I would like to empty multiple files contents (without delete the file) which have similar name to begin with. e.g. log1.txt log2.txt log3.txt log4.txt I know cat /dev/null will do the job but that only apply to a single file. But when i tried cat /dev/null > {} \; that doesnt do... (7 Replies)
Discussion started by: kin
7 Replies

7. Shell Programming and Scripting

Write array contents to file

Hi, I have a bash script that currently holds some data. I am trying to write all the contents to a file called temp.txt. I am using echo ${array} > temp.txt The problem that I am experiencing is that the elements are being written horizontally in the file. I want them written... (5 Replies)
Discussion started by: Filter500
5 Replies

8. UNIX for Dummies Questions & Answers

[ksh93+] Array fed by function is empty when used in main.

I feel that i am missing something obvious but i can't find what is wrong. I have a script that is launching some functions with "&" and each call is feeding the array with a value. When all calls are finished I just want to retrieve the values of that array. It is looking like that : ... (5 Replies)
Discussion started by: bibou25
5 Replies

9. Shell Programming and Scripting

Display array contents on a new line

ksh eg arrayname=(1 2 3 4 5) I'm trying to display the individual contents of an array on a new line without using a loop, using one line of code. output 1 2 3 4 5 (3 Replies)
Discussion started by: squrcles
3 Replies

10. UNIX for Dummies Questions & Answers

Looping through the contents of array for output name

Hi all, I am trying to loop through the string contents of an array, to add it during the saving of the output files. I am trying this code to print each column and save it to unique file name, but it doesn't work. Thanks for any help. fnam=(japan usa uk) alldata.dat contained sample data... (1 Reply)
Discussion started by: ida1215
1 Replies

LEARN ABOUT MOJAVE

locale::codes::langvar

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

NAME

       Locale::Codes::LangVar - standard codes for language variation identification

SYNOPSIS

	  use Locale::Codes::LangVar;

	  $lvar = code2langvar('acm');		       # $lvar gets 'Mesopotamian Arabic'
	  $code = langvar2code('Mesopotamian Arabic'); # $code gets 'acm'

	  @codes   = all_langvar_codes();
	  @names   = all_langvar_names();

DESCRIPTION

       The "Locale::Codes::LangVar" module provides access to standard codes used for identifying language variations, such as those as defined in
       the IANA language registry.

       Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default IANA language
       registry codes will be used.

SUPPORTED CODE SETS

       There are several different code sets you can use for identifying language variations. 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:

	  $lvar = code2langvar('en','alpha-2');
	  $lvar = code2langvar('en',LOCALE_CODE_ALPHA_2);

       The codesets currently supported are:

       alpha
	   This is the set of alphanumeric codes from the IANA language registry, such as 'arevela' for Eastern Armenian.

	   This code set is identified with the symbol "LOCALE_LANGVAR_ALPHA".

	   This is the default code set.

ROUTINES

       code2langvar ( CODE [,CODESET] )
       langvar2code ( NAME [,CODESET] )
       langvar_code2code ( CODE ,CODESET ,CODESET2 )
       all_langvar_codes ( [CODESET] )
       all_langvar_names ( [CODESET] )
       Locale::Codes::LangVar::rename_langvar  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Codes::LangVar::add_langvar  ( CODE ,NAME [,CODESET] )
       Locale::Codes::LangVar::delete_langvar  ( CODE [,CODESET] )
       Locale::Codes::LangVar::add_langvar_alias  ( NAME ,NEW_NAME )
       Locale::Codes::LangVar::delete_langvar_alias  ( NAME )
       Locale::Codes::LangVar::rename_langvar_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangVar::add_langvar_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangVar::delete_langvar_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.iana.org/assignments/language-subtag-registry
	   The IANA language subtag registry.

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							    2014-01-06					       Locale::Codes::LangVar(3pm)
All times are GMT -4. The time now is 06:33 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy