General :: Use "#!/usr/bin/perl" In The Beginning Of A Perl Script

Dec 17, 2010

I have a small problem with Perl and Apache.

If I use "#!/usr/bin/perl" in the beginning of a perl script the script won't work if the script is at all complicated. Simple scripts like "Hello World" works.

But if I use "#!/usr/bin/perl -w" in the beginning all scripts work?

If I don't use the -w this is whats in the logs:

(2)No such file or directory: exec of '/home/' failed

Premature end of script headers:

When I use the -w in the script the error-log shows me this. Name "main::http_path_cgi" used only once: possible typo at /home/ line 24.

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CentOS 5 Server :: Move 5.5 To /usr/bin/perl So Root Based On Perl 5.12.1?

Aug 11, 2010

I am new here and want to lern CentOS. Current I have installed CentOS 5.5 x64 and Perl 5.8.8. Now i have install Perl 5.12.1 which located to /usr/local/bin/perl. But how I can move it to /usr/bin/perl so root based on Perl 5.12.1?

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Debian :: Launch The Perl Config \ Seems To Be That It Does Not Regonize Perl?

Jul 7, 2010

I am trying to launch the perl config, but when I do so I can an weird error.It seems to be that it does not regonize perl ? line 11: =: command not found line 19: my: command not found line 20: syntax error near unexpected token `{'


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Ubuntu :: Switch Back To /usr/bin/perl After Installing Second Perl?

Aug 14, 2010

I recently reinstalled the B module for perl. Now I found out it didn't just do that, it installed a whole new copy of perl into /usr/local/bin/perl. When I type 'which perl' at the terminal, it says '/usr/local/bin/perl' instead of '/usr/bin/perl'. Normally, this wouldn't bother me. But I installed the one in local/bin without threading support. The one that comes with the system already is build with threading support, which is why I want to switch back to the system perl, and possibly remove the one in /usr/local/bin.

So how do I change it so that the result of 'which perl' returns as '/usr/bin/perl'? And what do I have to do to remove /usr/local/bin/perl?

The reason I need threading support is because I'm designing a file copier that copies several chunks of a file simultaneously to speed up the copying process. Guaranteed a useful script if it works.

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Programming :: Perl - Delete Line From Text File With Duplicate Match At Beginning Of Line

Apr 1, 2009

Was wondering if any perl guru's could help me with a quick log file adjustment. I have a text file that looks like so (tabs and newlines are revealed so you can see what separates the data):

There are maybe 100 lines of text in this file at any given time. I need to delete all duplicate lines only looking at the first bit of text prior to the first tab. It doesn't matter which one gets deleted as long as there are no two lines that begin with that same text at the beginning before the first tab. So in this example, either the fist line "1234" or the last line "1234" would need to be deleted. I already have code in my script that opens the files - I just need the code to read the text into an array and the part that would find matches based on the above criteria, and make the deletions.

If it would be easier, I can even do a system call and use SED (v4.1.5) and/or AWK (3.1.5) instead.

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OpenSUSE :: Difference Between Perl And Perl-devel?

Jun 28, 2010

I'm new in perl programming and linux OS. What is the difference between perl and perl-devel? What does mean devel? Iwant to install Catalyst and before install as required I have to check if make, gcc and perl-devel are installed in my system. make and gcc are installed. But I have to install perl-devel. First I searched for make, gcc and perl-devel in YAST Software Management and search did not find perl-devel. I visited the and wrote "perl-devel" and searched. The result was many similar zips with a prefix perl-devel and I can not choose one for needed perl-devel.


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Fedora Networking :: /usr/bin/perl: Symbol Lookup Error: /usr/bin/perl: Undefined Symbol: PL_use_safe_putenv

Apr 8, 2009

I am trying to setup the wlan access for my Fedora 9 system. I installed ndiswrapper. But when I run


ndiswrapper -l

i am getting the error


/usr/bin/perl: symbol lookup error: /usr/bin/perl: undefined symbol: PL_use_safe_putenv

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CentOS 5 Server :: Unable To Give "Perl Path" To Run Perl CGI Script

Jun 2, 2011

I am unable to run perl-cgi script in my cent os Apache server. I have used locate perl command in terminal window and it gives following result:


tell which is the path to perl for example "usr/bin perl"

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General :: Ubuntu 10.04 - How To Use Perl Doc

Oct 5, 2010

I Installed perl-doc in ubuntu 10.04 using sudo apt-get install perl-doc,in the same way I installed doc for postgreSQL. How to use perl-doc so that I can get from perl-doc.

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General :: Replacing Awk With Perl?

Jul 16, 2010

I want the output of this file to be in a column, not next to each ohter. I tired putting a a newline escape character in a few places, but it breaks the script. It is easy in awk, just ls -ltr | awk '{print $8 }'

casper@casper-laptop:~$ pwd
casper@casper-laptop:~$ ls -ltr > /tmp/outfile
casper@casper-laptop:~$ cat -n /tmp/moreawkreplace


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General :: Get The Path To The Perl Script?

May 1, 2011

I had a problem recently, where a perl script was consuming server resources. I found out it was a perl script by using "top". But it didn't give the path to the script. Nor did ps.Also, ps -ef showed that the process with that pid is /usr/bin/httpd (apache), so it must have been apache serving some perl page I suppose.Is it possible to get the path to currently running perl script, if I only know the process PID of the perl process that is running that script? If so, how? I don't need the path to the perl binary, I need the path to the perl script that binary is currently executing.

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General :: Automated Installation With Perl?

May 21, 2011

I am making some scripts to automaticly install linux-software.gcc,kernel,binutils, etc.) I have made a command to extract the packages, but how can I check if I can re-use my already extracted source-archives?

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General :: Perl Script To Parse Url From Xml URL?

Jan 20, 2011

I'm trying to simply pull a line (semi-static entry) from an xml file online with a shell script, or perl script. Basically, I've got a URL that loads an XML file. From this file I want to pull a text entry:

<blah xml code blah '' blah xml code blah>

I would like to do this from a shell or perl script. I would like to parse the xml file so that it just pulls the http - .123 information and ends there, that's the only information I need. it will then run a local command on this file.

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General :: Compare Two Files In Perl?

Oct 27, 2009

I want to compare two files in perl, I have two files file1.txt & file2.txt. if column1 on file2.txt match column1 on file1.txt then I want my result on file3.txt (column1 column2 file1.txt + column1 column2 column3 file2.txt). this problem was solved with "awk" but I want to do in perl.

column1 column2
------- -------
linux-2049 1
linux-2817 1


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General :: Display AWK Output In Perl

Feb 8, 2011

I am trying to use awk command in perl. Below is my awk comamnd which works alone.
awk '{Easttot=Easttot+$1} END {print Easttot}' MessagesProcessedEAST2Cnts.dat
I would like to use this awk's output in shell script. I am using system command like below to get the out put. But it is not working.
$Output = system("awk '{Easttot=Easttot+$1} END {print Easttot}' MessagesProcessedEAST2Cnts.dat'");

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General :: Email From PERL/ Bash?

Jan 16, 2011

I can not make this work: I can send email from bash with this script: #!/bin/bash echo "Test message" | /usr/bin/mail -s "test2" ""

When I am trying to run this in Perl using system function like this:

system("'Test message' | /usr/bin/mail -s 'test2' '');

I get message that program exited with code 0 , which is nice, but mail does not get to destination.

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General :: Install Perl Packages In Red-Hat?

Aug 9, 2011

command list that will install

Perl IO::Pty and Perl IO::Tty modules in RED HAT

Im trying to install a rpm package but I get the following error

perl IO::Pty need by perl-Expect-1.17-1.rh9.rf.noarch.rpm
perl IO::Tty need by perl-Expect-1.17-1.rh9.rf.noarch.rpm

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General :: Manual Install Perl-5.10.1-3.tar.bz2 On Cygwin?

Jun 6, 2010

I have the binaries: perl-5.10.1-3.tar.bz2 and I don't have access (admin privileges) to run setup.exe for cygwin, my question is how can I install manually inside cygwin the module for perl: perl-5.10.1-3.tar.bz2?(or maybe can I get the sources and compile? can someone tell me please how?)

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General :: Why Does Perl Execute Bash Scripts

Mar 23, 2011

I'm playing with perl and found that I could just go:

"perl /home/me/"

and it would execute, even though it's not a perl script. Is that just a feature or is there something I'm missing? Why does perl do this?

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General :: File Type Check In Perl?

Oct 12, 2010

I am witing a file upload program in perl where i need to upload a wav or a gsm file and save it as a gsm file.How can i make sure that the uploaded file is a wav or a gsm sound file and not an executable malicious script or something.

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General :: Procmail Executing Perl Script

Jan 13, 2011

I have procmail parsing the subject line of incoming e-mail and depositing individual files in a folder that match the procmail recipe.I want to have that recipe spawn a perl script to parse the file to pull out specific information. I've googled this and found many examples but none of them work.When it finds a matching inbound message it logs it correctly in the charge.log file, writes the message in charges/new/xxx but skips the /home/rowan/ script.

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General :: Setting Headers For Webpages In Perl?

Sep 21, 2010

There is an AIX 5.3 Box and there are some Perl scripts that generate web pages. We use them for monitoring of logs. But the perl script, let's name it "", that extracts some information such as "Failed", or "Completed" from specified log files doesn't refresh the page automatically.

In PHP I know how to refresh / reload a page after a specific time interval. For example this command in a web page:

PHP Code:


would refresh the web page every 1 minute automatically.

How do we do that in Perl?

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General :: Append # Begining File In Perl

Nov 28, 2010

Can you please let me know how can i append # in the begining of each line Based on a a search string lile /^8282##8282/gc

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General :: Invoking Perl Inside A Ksh Script ?

Feb 8, 2011

Trying to invoke perl inside ksh script.

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General :: Not Able To Install Bugzilla Module In Perl

Jul 21, 2011

I am using RHEL5 64 bit. I am trying to install bugzilla. While installing i am getting error.

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General :: Perl Jobs Are Not Running From Crontab?

Nov 30, 2010

I am having a shell script which runs perl jobs.The script is starting the perl jobs when it is executed manually from the command line , but when the same script runs from crontab it is not starting the perl jobs.I have these things in the begining of the script

. /etc/profile
export MDX_HOME=/home/entsms
source $MDX_HOME/.bash_profile


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General :: Perl Not Recognized By Zimbra Installer?

May 14, 2010

I am attempting to install zimbra onto Ubuntu Hardy 8.04 x64 bit edition using this tarball:



However when I run the install script I get this error:


Press Return to continue

Checking for prerequisites...
FOUND: sudo-1.6.9p10-1ubuntu3.7
FOUND: libidn11-1.1-1


Perl may be copied only under the terms of either the Artistic License or the GNU General Public License, which may be found in the Perl 5 source kit. Complete documentation for Perl, including FAQ lists, should be found on this system using "man perl" or "perldoc perl". If you have access to the Internet, point your browser at [URL] the Perl Home Page.

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General :: Perl On Line To Take Out Select Values?

Jan 22, 2010

This is a Fix message - it is a type of protocol for transmitting financial dataeach number followed by a = sign is a tag - each tag means something. some tage are moe important than other.

8=FIX.4.1^9=0235^35=D^34=10^43=N^49=VENDOR^50=CUSTOME^ 56=BROKER^52=19980930- 09:25:58^1=XQCCFUND^11=10^21=1^55=EK^48=277461109^22= 1^54=1^38=10000^40=2^44=76.750000^59=0^10=165 18


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General :: Scripting - Formatting Ps Output W/Perl?

Sep 27, 2010

I'm writing a script that gives me some pertinent info about my servers, and the last little piece I need to figure out is the process list. There are going to be non-technical people looking at the output of the script and I'm trying to make it as simple as possible.

Right now, if I do ps -ef | grep <process> | grep -v grep
It obviously shows me the process, but the problem is that there is 4 lines of info in front of the process. ie

root PID date time java -1024 -cp oh,my,god,there,is,so,much,data,it,carries,on,for,4,lines,I,want,to,shoot,myself,trying,to,read,it,f inally,in,the,end,there,is,a,space /here/is/the/process
I'd like the output to be something like this:
PID: #### Process: /here/is/the/process

I've thought about how I could take the output and use awk or sed but I know there is probably an easier way to do it with perl.

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General :: How To Install Perl In Personal Unix Area

Sep 13, 2010

I'm working in a lab running a CentOS server with Perl 5.8.8.

I would like to install a newer version of Perl for my personal use only (i.e. do not affect other users). How can I do that?

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