Sponsored Content
Top Forums Shell Programming and Scripting perl: When dealing with files that do not exist Post 302169238 by KevinADC on Wednesday 20th of February 2008 03:24:53 PM
Old 02-20-2008
It all depends on your requirements, but a 'next' will work fine:

Code:
for ($j = 1; $j <= $k; $j++)
{

   open(FIN2,$fin2) or do {warn "Can't open $fin2: $!"; next;};

   do other stuff
}

remove the do {warn} stuff if you don't need any error handling.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

testing if files exist

I am trying to test arguments to see if they are files in any directory. I have : but it's not working (7 Replies)
Discussion started by: skooly5
7 Replies

2. Shell Programming and Scripting

Dealing with log files

Hi , My requirement is that i need to search for a number of strings in a log file and print them with line numbers.The search should be date wise. The sample log file is : Jan 17 02:45:34 srim6165 MQSIv500: (UKBRKR1P_B.LZ_ BENCHMARKS)BIP2648E: Message backed out to a queue; node... (6 Replies)
Discussion started by: charudpss
6 Replies

3. Shell Programming and Scripting

Dealing with files with spaces in the name

Hello, I'm a computer science major and I'm having problems dealing with file names with spaces in them. Particularly I'm saving a file name in a variable and then using the variable in a compare function i.e. a='te xt.txt' b='file2.txt' cmp $a $b If anyone could help me with this particular... (10 Replies)
Discussion started by: jakethegreycat
10 Replies

4. Shell Programming and Scripting

Perl: One action if an element doesn't exist in array

Hello, I want to run one (not multiple) action if an element doesn't exist in array. for example: @array = (1..10); foreach $el (@array) { if ($el != 11) { print "number not found\n"; } } the output of this simple script: number not found (3 Replies)
Discussion started by: ahmed_zaher
3 Replies

5. Shell Programming and Scripting

Check if file .jpg is exist perl

Hi, I just wondering I done program which will list .jpg extension file but if there is not .jpg file in current directory display error how to do it ; here is my code #!/bin/sh echo "Enter a program function :" # declear User input read func1 func2 ## user must input list follow by... (1 Reply)
Discussion started by: guidely
1 Replies

6. Shell Programming and Scripting

Iterating over subdirectories and dealing with files within them

Hello, I am working on a coding project for a class and to test the program I have created, I have come up with 100 different test cases. The program takes four text files as input, so each of the test cases is contained in a folder with four files. I have a folder called 'tests', within which... (1 Reply)
Discussion started by: dpryor
1 Replies

7. UNIX for Dummies Questions & Answers

Dealing with Empty files, AWK and Loops

I write this bit of code to calculate the mean and variance for all the files in one directory and print the mean and variance in a separate folder but with the same file name. FILES="data/*" for X in $FILES do name=$(basename $X) awk '{x=$0; s+=$0; n++} END{mean=s/n; for (i in x){ss... (20 Replies)
Discussion started by: A-V
20 Replies

8. Shell Programming and Scripting

Dealing with multiple files

Korn Shell I have hundreds of small files like below created every day. A midnight cron job moves them to the location /u04/temp/logs But sometimes I have to manually move these files based a certain dates or time. I have two basic requirements 1.Using mv command I want to move all .dat... (2 Replies)
Discussion started by: kraljic
2 Replies

9. Shell Programming and Scripting

Perform an action if certain text exist in output (PERL)

Hello, I'm attempting to write a tool that checks an IP address for existing PTR records then if there are no PTR records does a ping to see if it response. Then if there is no response, it should print a message saying This is what I have so far. #!/usr/bin/perl $nxdomain =... (4 Replies)
Discussion started by: spartan22
4 Replies

10. Shell Programming and Scripting

Dealing with filename spaces in Perl

The following command to replace text in place in multiple files in a directory is tripping up on filename spaces (Windows environment). I really don't know Perl. find '\\server\directory' | xargs perl -pi -e 's/textA/textB/g'Mike (2 Replies)
Discussion started by: Michael Stora
2 Replies
PERL-AFTER-UPGRADE(1)					User Contributed Perl Documentation				     PERL-AFTER-UPGRADE(1)

NAME
perl-after-upgrade -- fixup FreeBSD packages that depend on perl SYNOPSIS
perl-after-upgrade perl-after-upgrade -f perl-after-upgrade -v DESCRIPTION
The standard procedure after a perl port (either lang/perl5.6 or lang/perl5.8) upgrade is to basically reinstall all other packages that depend on perl. This is always a painful exercise. The perl-after-upgrade utility makes this process mostly unnecessary. The tool goes through the list of installed packages, looks for those that depend on perl, moves files around, modifies shebang lines in those scripts in which it is necessary to do so, tries its best to adjust dynamically linked binaries that link with libperl.so in the old path, and updates the package database. After installation of the new perl is complete, either by hand from the ports collection, or from a package, or via portupgrade, do the following: o go root; o run perl-after-upgrade utility. Do not specify any arguments at first, so it does nothing destructive. Pay attention to the produced output and especially to errorlist at the end, if any; o run the utility again, with -f command line option. This will actually do the work. Again, pay attention to the output produced; o fix any reported errors; o reinstall required packages: The utility will tell you what packages that depend on perl it could not handle. It will also tell you why it happened (for example, they were compiled against a binary incompatible perl). If you want such packages to remain operational, you will have to reinstall then by hand or via portupgrade. o review the files left in the older perl installation. This is typically /usr/local/lib/perl5/site_perl/5.X.Y/. There should be very little, if any, files in that directory and its subdi- rectories, excepting a number of .ph files; o check that things work as they should; o remove backup files from the package database. Those will be /var/db/pkg/*/+CONTENTS.bak; o that's all. COPYRIGHT AND LICENSE
Copyright 2005 by Anton Berezin "THE BEER-WARE LICENSE" (Revision 42) <tobez@FreeBSD.org> wrote this module. As long as you retain this notice you can do whatever you want with this stuff. If we meet some day, and you think this stuff is worth it, you can buy me a beer in return. Anton Berezin NO WARRANTY OF ANY KIND, USE AT YOUR OWN RISK. HISTORY
The first version of this utility was not bundled with perl package on FreeBSD. It was dumber than the current version in several impor- tant areas. It was faster. CREDITS
Thanks to Mathieu Arnold for discussion. SEE ALSO
perl(1). perl v5.8.9 2009-04-13 PERL-AFTER-UPGRADE(1)
All times are GMT -4. The time now is 11:04 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy