Sponsored Content
Top Forums Shell Programming and Scripting Interpreting arguments in Perl program. Post 302716469 by birei on Tuesday 16th of October 2012 12:14:57 PM
Old 10-16-2012
Hi D2K,

Here an example of how you can check the input argument:
Code:
$ echo "-4" | perl -nE 'm/^-(\d+)$/ and say $1 or die qq|Bad argument\n|'
4
$ echo "+-4" | perl -nE 'm/^-(\d+)$/ and say $1 or die qq|Bad argument\n|'
Bad argument
$ echo "-42354" | perl -nE 'm/^-(\d+)$/ and say $1 or die qq|Bad argument\n|'
42354
$ echo "42354" | perl -nE 'm/^-(\d+)$/ and say $1 or die qq|Bad argument\n|'
Bad argument

 

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

Arguments to a shell program

Hi List, Is it possible to pass one argument to a shell program eg) there is a shell program abc which takes one arguments abc one Due to some reasons I pass abc one two Now one,two must be considered as "one" argument to the shell programs. Any suggestions,hints are welcome. ... (3 Replies)
Discussion started by: csvenkata
3 Replies

2. Shell Programming and Scripting

two arguments with nawk program

Can someone help me to understand this part of code? /bin/nawk -f awkfile file1 file2 I know awkfile is the one with awk script. file1 is source file that needs to be processed. What is file2 two? Thanks for your help! (4 Replies)
Discussion started by: whatisthis
4 Replies

3. Linux

Where to set program arguments in DDD debugger?

In DDD debugger, where to set the the arguments for main program? For example: ./myExe "argv1" "argv2" -> where to set "argv1" & "argv2" ? Thanks! (2 Replies)
Discussion started by: princelinux
2 Replies

4. Shell Programming and Scripting

pass arguments to called program

Thank you very much. (2 Replies)
Discussion started by: ShellUser
2 Replies

5. Shell Programming and Scripting

How to give runtime arguments to different program

I have a shell script that is attempting to call a c program. I call the c program with ./dictool dictool accepts arguments at runtime. It works by prompting the user for various commands, acting on those commands, spitting out an output, and then prompting for more commands. My question is,... (1 Reply)
Discussion started by: aarongoldfein
1 Replies

6. Programming

Changing the way arguments are read from program

I have the following piece of code. Currently the command line arguments are passed as shown below using the "= "sign. I capture the name of the argument, for example vmod and it's corresponding user parameter which is jcdint-z30.cmd. ./raytrac vmod=jcdint-z30.cmd srFile=jcdint.sr Now I want... (12 Replies)
Discussion started by: kristinu
12 Replies

7. Programming

Program java arguments

Hello, The arguments are strings. In my code I need them to be a different type, I do the cast but it is not feasible ... Have you any idea? Thank you (8 Replies)
Discussion started by: chercheur857
8 Replies

8. Programming

Writing C++ program Arguments and Classes

I want to write a C++ program that uses a class to do some calculations. I pass arguments to the program, some of which are used to set up class members. A class function will then perform the necessary calculations. I am wondering how I should pass the arguments from the program to set the... (2 Replies)
Discussion started by: kristinu
2 Replies

9. Shell Programming and Scripting

Passing arguments to interactive program through bash script, here document

Dear Users, I have installed a standalone program to do multiple sequence alignment which takes user parameters to run the program. I have multiple sequence files and want to automate this process through a bash script. I have tried to write a small bash code but its throwing errors. Kindly... (13 Replies)
Discussion started by: biochemist
13 Replies

10. Shell Programming and Scripting

How to pass command line arguments to awk program?

#!/bin/awk -f BEGIN { FS=":"; } { if ( $7 == "" ) { print $1 ": no password!"; } } I want to execute this program for a particular user to check for his password from the file /etc/passwd (as the input file) and the user details to be given... (1 Reply)
Discussion started by: sri.phani
1 Replies
DATEFMT_SET_PATTERN(3)							 1						    DATEFMT_SET_PATTERN(3)

IntlDateFormatter::setPattern - Set the pattern used for the IntlDateFormatter

	Object oriented style

SYNOPSIS
public bool IntlDateFormatter::setPattern (string $pattern) DESCRIPTION
Procedural style bool datefmt_set_pattern (IntlDateFormatter $fmt, string $pattern) Set the pattern used for the IntlDateFormatter. PARAMETERS
o $fmt - The formatter resource. o $pattern - New pattern string to use. Possible patterns are documented at http://userguide.icu-project.org/formatparse/datetime. RETURN VALUES
Returns TRUE on success or FALSE on failure. Bad formatstrings are usually the cause of the failure. EXAMPLES
Example #1 datefmt_set_pattern(3) example <?php $fmt = datefmt_create( 'en_US', IntlDateFormatter::FULL,IntlDateFormatter::FULL, 'America/Los_Angeles', IntlDateFormatter::GREGORIAN, 'MM/dd/yyyy' ); echo 'pattern of the formatter is : ' . datefmt_get_pattern($fmt); echo 'First Formatted output with pattern is ' . datefmt_format($fmt, 0); datefmt_set_pattern($fmt, 'yyyymmdd hh:mm:ss z'); echo 'Now pattern of the formatter is : ' . datefmt_get_pattern($fmt); echo 'Second Formatted output with pattern is ' . datefmt_format($fmt, 0); ?> Example #2 OO example <?php $fmt = new IntlDateFormatter( 'en_US', IntlDateFormatter::FULL,IntlDateFormatter::FULL, 'America/Los_Angeles', IntlDateFormatter::GREGORIAN, 'MM/dd/yyyy' ); echo 'pattern of the formatter is : ' . $fmt->getPattern(); echo 'First Formatted output is ' . $fmt->format(0); $fmt->setPattern('yyyymmdd hh:mm:ss z'); echo 'Now pattern of the formatter is : ' . $fmt->getPattern(); echo 'Second Formatted output is ' . $fmt->format(0); ?> The above example will output: pattern of the formatter is : MM/dd/yyyy First Formatted output with pattern is 12/31/1969 Now pattern of the formatter is : yyyymmdd hh:mm:ss z Second Formatted output with pattern is 19690031 04:00:00 PST SEE ALSO
datefmt_get_pattern(3), datefmt_create(3). PHP Documentation Group DATEFMT_SET_PATTERN(3)
All times are GMT -4. The time now is 07:22 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy