Perl is a programming language. If you do heavy programming, Perl is more suited than shell scripting. But if all you want to do is parse and/or filter system command output, I will likely do shell scripting alone. For other cases, I will use Perl.
Perl is not convoluted. It is just your exact case that looks convoluted. There are many Perl one-liners floating all around on the Web to tell you it is not necessarily convoluted.
A one-liner that gives the same result as your shell command:
Is it convoluted? I don't think so. Think about doing that in C or Java.
I mean this :
perl -pi -e 's/OS/blah/g' *.c*
The Great thing in such thing i dont need to rename orig then rename back when i do it with
sed for instance inside csh shell , is there any way to avoid this with sed/awk/what ever?
Thanks (4 Replies)
Hi All,
I am trying to put the csh variable into a perl.
In the below case, i am trying to put the csh variable "var" into my perl code. I tried to use '"$var"' but i don;t think it works.
Can anybody help me pls?
#!/bin/csh
set var = `echo "xxx"`
perl myperlcode.pl file
... (9 Replies)
I am using perl to perform a search and replace. It works at the command line, but not in the csh shell script
perl -pi -e 's@/Pattern@@g' $path/$file
I used the @ as my delimiter because the pattern contains "/" (3 Replies)
Hmm quite difficult for me to express my problem in one sentence.Introduction {i am a newbee to csh perl, awk and stuff, and by surfing these forums i managed to build quite a big code using all three of them in a script. Have to admitt, it was not a good idea, and its the perfect example of how... (3 Replies)
Hi ,
I am trying to convert the below code embedded in a csh script to Perl.
Can any expert give me some advice on this ?
sed -n ''"$start_line"',$ p' $tester_dir/nfiles_extracted.txt|cut -c1-4,6-|/bin/perl $test_summary/compare_for_all
_Duts.pl|sort > $tester_dir/nfiles_extracted1.txt (0 Replies)
Hey guys. I have a .pl script that scans my hosts to see if they are down or up. I can run it anytime I want. The script uses a conf file that contains text lines of the IP addresses of the servers. I run the script from the command line of my terminal (MAC OS)
I run: sudo ./scanner.pl
brings... (3 Replies)
Hello,
I need help in creating a PERL script for parsing test result files to get the results (pass or fail). Each test case execution generates a directory with few files among which we are interested in .result file.
Lets say Testing is home directory. If i executed 2 test cases. It will... (4 Replies)
Can any one please help, the code works...I want the output of $result to be saved in an output.txt file which is lcoated in c:\\temp\\output.txt.
$filepath="C:\\temp\\ip.txt";
open (HOSTLIST,"$filepath");
@hosts=(<HOSTLIST>);
foreach $host(@hosts)
{
$results = `nslookup... (1 Reply)
I use csh a lot but I don't really write csh scripts. Now I have a need to implement a security check (written in perl; verify an user input security code) into a csh script. Here is the senario:
#csh
1. call the perl script
2. if the perl script returns 'true', pass on;
if the perl... (1 Reply)
I have 3 programs, 1 in perl, 2 in csh: call them perl1, csh1 and run.ol
I need perl1 to set csh1 variable NOLOG_qsub = ""
I need perl1 to run, run.ol
run.ol takes the executable and input and outputs to output
run.ol#!/bin/csh -f
# run.ol executable input output
perl1 should... (1 Reply)
Perl::Critic::Policy::BuiltinFunctions::RequireBlockGrepUser Contributed Perl DocumentaPerl::Critic::Policy::BuiltinFunctions::RequireBlockGrep(3)NAME
Perl::Critic::Policy::BuiltinFunctions::RequireBlockGrep - Write "grep { $_ =~ /$pattern/ } @list" instead of "grep /$pattern/, @list".
AFFILIATION
This Policy is part of the core Perl::Critic distribution.
DESCRIPTION
The expression forms of "grep" and "map" are awkward and hard to read. Use the block forms instead.
@matches = grep /pattern/, @list; #not ok
@matches = grep { /pattern/ } @list; #ok
@mapped = map transform($_), @list; #not ok
@mapped = map { transform($_) } @list; #ok
CONFIGURATION
This Policy is not configurable except for the standard options.
SEE ALSO
Perl::Critic::Policy::BuiltinFunctions::ProhibitStringyEval
Perl::Critic::Policy::BuiltinFunctions::RequireBlockMap
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::BuiltinFunctions::RequireBlockGrep(3)