How to Use PERL on Redhat
Red Hat Enterprise Linux (RHEL) has the Perl programming language installed natively. You can create a Perl script and execute it without installing any additional software. The first line of the script must be a shebang (#!) followed by the path to the Perl interpreter. RHEL places the Perl interpreter in the "/usr/bin" directory. You do not have to create the a script file, you can type a single line of code on the command line, if you prefer.
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Instructions
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Perl Script
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1
Open a blank plain text document in any text editor.
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2
Type the line
#!/usr/bin/perl
to start the Perl script.
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3
Type the rest of the Perl script.
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4
Save the file with the ".pl" file extension to indicate that it is a Perl script.
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5
Type the command "perl filename.pl" at a command prompt to execute the script. Replace "filename" with the name you gave the script.
Perl One-liner
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6
Open a terminal window or log in to the computer via an SSH session to access a command line.
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Type the line "perl -e 'print 'Hello Universe! \n";' to create the single line script. You can type any Perl code between the single quotes.
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8
Press the "Enter" key to execute the Perl script.
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1
Tips & Warnings
You can type "chmod +x filename.pl" to make a Perl file executable then type "./filename.pl" at the command line to execute it.
