Hi All,
I have just started learning perl and was working on my one-liners tips and tricks.
Instead of using the below command :
Code:
perl -lape 's/(^From:).*/$1 Nelson Elhage <nelhage\@ksplice.com>/'
i tried using the \k command using the below command but it gave no results:
Code:
perl -lape 's/^From:\K.*/ Nelson Elhage <nelhage\@ksplice.com>/'
Is there some problem with the perl version on my unix box. Please find some of details of the platform i am using:
Code:
> uname -a
HP-UX hpxi017 B.11.23 U ia64 1433056900 unlimited-user license
> perl -v i
This is perl, v5.8.8 built for IA64.ARCHREV_0-thread-multi
(with 33 registered patches, see perl -V for more detail)
i am new to perl. i am writing a perl script. i want to know how to change the working directories? for ex. i have a perl script in c:\proj\ . i want to run this script in this directory but i need my script to change its working directory to D:\xyz\ dynamically in the script.
your help is... (1 Reply)
Hi,
I'm still new to perl, and I'm trying to figure out how to work with data output from another program. For example, from a command line I can run "foo -xyz" and it will produce the output I am looking for, which is several lines of text that I will then parse and manipulate within the perl... (6 Replies)
Good morning all....
I have been learning Perl for about 2 months now and I guess I am getting there as much as I can however I am really stuck. I have a Perl script called postEvent.pl which uses a package called event.pm. PostEvent.pl depends on a meithod inside event.pm called isSuccess to... (0 Replies)
Hi Experts!!
I have written a very simple script in perl.The script is :
$ cat 1.pl
#!/usr/bin/perl
print "Hi there!\n";
When i ran the above perl script it is showing the following error:
$ perl 1.pl
-ksh: cd: bad substitution
Can anybody,help on this ....as why this script is... (1 Reply)
I am trying to work with a text file which has following format and trying ti run if elseif loop but fails. Any help is appreciated
289B ship N-grp 123
289C ship N-grp 123
289D ship N-grp 123
2CE1 flight N-grp 123
2CE2 flight N-grp 123
2CE3 flight N-grp 123
2CE4 flight N-grp 123
2DAF... (4 Replies)
Guys,
i was trying a simple if-then-else statement in perl; but not getting any success in that.
can you please help, where i am wrong. I tried $diff variable with double quotes as well, but no go.
$region = $ARGV;
$diff = $ARGV;
if ; then
($date) = split(' ', `ssh -xC $san cat... (2 Replies)
have issue where my elsif is always failing. Basically i have a file with sets of 2 lines, the 1st line that containing "ipwr" and the 2nd line containing a value or "unknown". if the 2nd line contains a value then i want to print the pair of lines.
open (INFO, "temp.txt") or die;
... (3 Replies)
Hello to all,
The Regex below is supposed to match all strings except RR45. I've tested in regex101.com and it works, butwhen I try to use it with the perl command below I get the error shown.
Regex=(?<=^|RR45)(?!RR45).+?(?=RR45|$)
How to fix this? I'm using Cygwin.
$ echo... (9 Replies)
Experts - I have a snippet of code I can't figure out. I was hoping someone could help me here.
I have a file of IPv6 address that I need to format correct.
Example in:
2620:0:2d0:200::7
2620:0:2d0:200:a0:c
2620:0a:3f0:200:a0:c
I need to convert them to:... (3 Replies)
Discussion started by: timj123
3 Replies
LEARN ABOUT DEBIAN
pperl
PPERL(1p) User Contributed Perl Documentation PPERL(1p)NAME
PPerl - Make perl scripts persistent in memory
SYNOPSIS
$ pperl foo.pl
DESCRIPTION
This program turns ordinary perl scripts into long running daemons, making subsequent executions extremely fast. It forks several processes
for each script, allowing many processes to call the script at once.
It works a lot like SpeedyCGI, but is written a little differently. I didn't use the SpeedyCGI codebase, because I couldn't get it to
compile, and needed something ASAP.
The easiest way to use this is to change your shebang line from:
#!/usr/bin/perl -w
To use pperl instead:
#!/usr/bin/pperl -w
WARNINGS
Like other persistent environments, this one has problems with things like BEGIN blocks, global variables, etc. So beware, and try checking
the mod_perl guide at http://perl.apache.org/guide/ for lots of information that applies to many persistent perl environments.
Parameters
$ pperl <perl params> -- <pperl params> scriptname <script params>
The perl params are sent to the perl binary the first time it is started up. See perlrun for details.
The pperl params control how pperl works. Try -h for an overview.
The script params are passed to the script on every invocation. The script also gets any current environment variables, the current working
directory, and everything on STDIN.
Killing
In order to kill a currently running PPerl process, use:
pperl -- -k <scriptname>
You need to make sure the path to the script is the same as when it was invoked.
Alternatively look for a .pid file for the script in your tmp directory, and kill (with SIGINT) the process with that PID.
ENVIRONMENT
pperl uses the PPERL_TMP_PATH environment variable to determine the directory where to store the files used for inter-process
communication. By default, the subdirectory .pperl of the user's home directory is used.
BUGS
The process does not reload when the script or modules change.
$^S is not represented identically with respect to perl, since your script will be run within an eval block
AUTHOR
Matt Sergeant, matt@sergeant.org. Copyright 2001 MessageLabs Ltd.
SEE ALSO
perl. perlrun.
perl v5.14.2 2011-11-15 PPERL(1p)
03-22-2011
