11-05-2015
OK Let's get back to basics. You have been given suggestions that should work with any POSIX conforming shell.
What operating system are you using?
What shell are you using?
This User Gave Thanks to Don Cragun For This Post:
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
I have a problem.
I have some text files in a folder. The names can be like:
emp.txt
emp1.txt
emp3.txt
32emp4.txt
What i need is i have to copy all the files which have "emp" string in their filename
to a different folder and those file names... (7 Replies)
Discussion started by: pathanjalireddy
7 Replies
2. UNIX for Dummies Questions & Answers
Hi Gurus,
I have some files(all ending with .out as extension).
Ex:
aa1.out
aa2.out
aa3.out
I would like to append each file with the current date to the end of the file so that they should become aa1_20090504.out.
So I am using rename as follows:
for i in path/aa* ; do mv $i... (5 Replies)
Discussion started by: asmfloyd
5 Replies
3. UNIX for Dummies Questions & Answers
Hello
i have the files in this format
pdb1i0t.ent
pdb1lv7.ent
pdb1pp6.ent
pdb1tj2.ent
pdb1xg2.ent
pdb2b4b.ent
pdb2ewe.ent
Now i have to remove the prefix pdb from all the files and also i need to change the extension of .ent to .txt
The new file should look like this
... (3 Replies)
Discussion started by: empyrean
3 Replies
4. Shell Programming and Scripting
Hi.
I need help with a little script that will be used to move some files to their parent directory, delete the directory, rename one file in the parent directory and delete another, then continue to the next.
Here's an example:
/var/media/Music/Genesis/1970 album - Trespass (2008 Box -... (4 Replies)
Discussion started by: aflower
4 Replies
5. UNIX for Dummies Questions & Answers
Team,
Pls help writing a shell script which will sort all the files in a directory with the timestamp they were created. (like ls -lrt) (6 Replies)
Discussion started by: asappidi
6 Replies
6. Shell Programming and Scripting
Hey guys,
I'm really new to UNIX and shell scripting in general. For my internship I need to rename a bunch of files. Specifically, I need to change the first letter of each of the files to lowercase and I have to change the endings so they all basically look like "file_cone.jpg". I know I... (4 Replies)
Discussion started by: jjzieve
4 Replies
7. Shell Programming and Scripting
I have some 50+ files in the following format :
abcd_vish_running_ZEBRA_20140818.dat_08-14-2014_23:08:23
abcd_vish_running_ZEB-RA_20140818.dat_08-14-2014_23:08:35
abcd_vish_running_ZEB_RA_20140818.dat_08-14-2014_23:08:37
abcd_vish_running_RI-NG_20140818.dat_08-14-2014_23:08:42... (5 Replies)
Discussion started by: SriRamKrish
5 Replies
8. UNIX for Dummies Questions & Answers
Hi
I would like to rename Multiple files in a Unix Directory using Ksh Command.
Eg ATT8-2011-10-01 00:00:00-MSA-IMM-SINGLE_AND_FAMILY_COVERAGE-DED-$2000-X114817.PDF
needs to be renamed as
ATT8-2011-10-01-MSA-IMM-SINGLE_AND_FAMILY_COVERAGE-DED-$2000-X114817.PDF
Basically the time... (2 Replies)
Discussion started by: pchegoor
2 Replies
9. Shell Programming and Scripting
Hey guys,
ive been working on this for about 2hrs now - without any solution.
At first I need to say I dont have skills in linux bash scripting, but I tried to use some codesnippets and manuals from google.
What I want to do:
I have different folders including 2 different filestypes with... (15 Replies)
Discussion started by: peter1337
15 Replies
10. UNIX for Beginners Questions & Answers
Hi,
I am trying to removing the old files which were older than 10 days and same g zipping the files using the shell script.
script was return as follows.
find /jboss7_homes/JBOSS7/SKYLIV??/SKYLIV??_CRM/jboss-eap-7.0/standalone/log -mtime +10 -type f | xargs rm -f
find /cer_skyliv??/log... (6 Replies)
Discussion started by: venkat918
6 Replies
LEARN ABOUT CENTOS
perl::critic::policy::inputoutput::prohibitbacktickoperators
Perl::Critic::Policy::InputOutput::ProhibitBacktickOperaUser(Contributed Perl DocumPerl::Critic::Policy::InputOutput::ProhibitBacktickOperators(3)
NAME
Perl::Critic::Policy::InputOutput::ProhibitBacktickOperators - Discourage stuff like "@files = `ls $directory`".
AFFILIATION
This Policy is part of the core Perl::Critic distribution.
DESCRIPTION
Backticks are super-convenient, especially for CGI programs, but I find that they make a lot of noise by filling up STDERR with messages
when they fail. I think its better to use IPC::Open3 to trap all the output and let the application decide what to do with it.
use IPC::Open3 'open3';
$SIG{CHLD} = 'IGNORE';
@output = `some_command`; #not ok
my ($writer, $reader, $err);
open3($writer, $reader, $err, 'some_command'); #ok;
@output = <$reader>; #Output here
@errors = <$err>; #Errors here, instead of the console
CONFIGURATION
Alternatively, if you do want to use backticks, you can restrict checks to void contexts by adding the following to your .perlcriticrc
file:
[InputOutput::ProhibitBacktickOperators]
only_in_void_context = 1
The purpose of backticks is to capture the output of an external command. Use of them in a void context is likely a bug. If the output
isn't actually required, "system()" should be used. Otherwise assign the result to a variable.
`some_command`; #not ok
$output = `some_command`; #ok
@output = `some_command`; #ok
NOTES
This policy also prohibits the generalized form of backticks seen as "qx{}".
See perlipc for more discussion on using "wait()" instead of "$SIG{CHLD} = 'IGNORE'".
You might consider using the "capture()" function from the IPC::System::Simple module for a safer way of doing what backticks do,
especially on Windows. The module also has a safe wrapper around "system()".
AUTHOR
Jeffrey Ryan Thalhammer <jeff@imaginative-software.com>
COPYRIGHT
Copyright (c) 2005-2011 Imaginative Software Systems. All rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of this license
can be found in the LICENSE file included with this module.
perl v5.16.3 2014-06-09 Perl::Critic::Policy::InputOutput::ProhibitBacktickOperators(3)