Sponsored Content
Top Forums UNIX for Dummies Questions & Answers Problems understanding example code Post 302338867 by Makaer on Wednesday 29th of July 2009 06:08:43 AM
Old 07-29-2009
Just a couple more quick questions.

Code:
set -- $(ls -ld $file)

What is the use of the double --?

I have read up and it states that it doesnt allow change of any of the flag, useful in setting $1 to "-".

Im not 100% sure what it means, I have tested with one - and two and found that you could not change the file name whilst using one as an error occured.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Understanding Code in IF LOOP

Hello All, I would like to know and understand the difference between the below 3 IF loops and also if possible what are the different other parameters i could use other than those mentioed in the below lF LOOP conditions, appreciate your help. Thanks, Sam. (1 Reply)
Discussion started by: Ariean
1 Replies

2. Shell Programming and Scripting

Problems understanding example code

I am really new to UNIX and programming in general and so apologies if this thread is a bit simple. I have searched and found a piece of sample code for a training program I am currently undertaking, but seeing as I am relatively new, I dont completely understand how it works. Here is the... (1 Reply)
Discussion started by: Makaer
1 Replies

3. UNIX Desktop Questions & Answers

Understanding the code

hello all, May i know what is this "DEBUG_ME $DEBUG_CMD main" doing in the below code. I am confused with alias also "alias DEBUG_ME='#'". Thanks for your help. set -x alias DEBUG_ME='#' if ; then . /product/apps/informatica/v7/pc/ExtProc/debug.ksh "$1" fi # Declaring the... (1 Reply)
Discussion started by: Ariean
1 Replies

4. Programming

Problems understanding pipes

I am trying to create a csh clone, but am having problems implementing piped commands. Specifically, the below code simply hangs after input of ls | grep <text> It does however filter the output and display it correctly, but it appears that grep hasn't exited and my shell never comes back to the... (16 Replies)
Discussion started by: ab_tall
16 Replies

5. Shell Programming and Scripting

Help understanding Perl code.

Well, I found myself trying to fix some Perl code (Ive never done any Perl in my life) and I pinpointed the place where the bug could be. But to be sure I have to know what does a few line of code mean: $files_lim =~ (/^\d*$/) $files_lim =~ (/^\d*h$/)$files_age =~ s/h//The code where this was... (0 Replies)
Discussion started by: RedSpyder
0 Replies

6. Shell Programming and Scripting

Help understanding some Perl code.

Well, I found myself trying to fix some Perl code (Ive never done any Perl in my life) and I pinpointed the place where the bug could be. But to be sure I have to know what does a few line of code mean: $files_lim =~ (/^\d*$/) $files_lim =~ (/^\d*h$/) $files_age =~ s/h// The code where... (2 Replies)
Discussion started by: RedSpyder
2 Replies

7. Programming

Understanding perl code

What is the difference between the two statements below? A: $a->{"$fruit"}->{"$color"}->{size} = $size B: $size = $a->{"$fruit"}->{"$color"}->{size} Please assist. Thanks! (0 Replies)
Discussion started by: onlinelearner02
0 Replies

8. Shell Programming and Scripting

Help with perl code understanding

Hi, I need to understand below perl code, can some one advise me. perl -MDate::Parse -e'BEGIN{$main::now=time;$main::old=(time-60*30)}' -nE'if(/^(\w+\s+\d+\s+\d+:\d+:\d+)/) {$t=str2time $1; $t > $old && $t < $now && print}' (1 Reply)
Discussion started by: learnbash
1 Replies

9. UNIX for Dummies Questions & Answers

Understanding bash code

I am not able to understand below line in unix bash shell.Could anyone explain what it will do result="${path1}/*${var1}*${var2}*wssreligibleitem*.csv" path1 is defined and it is a directory path var1 is defined and it holds string value like abc var2 is defined and it holds string value like... (6 Replies)
Discussion started by: vamsi.valiveti
6 Replies

10. Programming

Understanding Assembly Code

As the title suggests, I want to better understand the following assembly code: section .text global main ; must be declared for linker (gcc) main: ; tell linker entry point mov edx, len ; message length mov ecx, msg ; message to write... (2 Replies)
Discussion started by: Azrael
2 Replies
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) 2011-2012 Sullivan Beck This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.16.2 2012-10-11 Locale::Codes::LangVar(3pm)
All times are GMT -4. The time now is 11:40 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy