run perl script in linux
 

Here is the perl script test case called hello.pl

#!/usr/bin/perl
print "Hello world!\n";


the command to invoke the script in the terminal as:
#perl hello.pl

How could I execute it without the "perl" prefix as:
#hello.pl

I have chmod 777 hello.pl

#which perl
/usr/bin/perl

Hi,

If the location the script is in is not in your PATH: ./hello.pl

Hope this helps.

You may run any executable file by providing the full (absolute) or relative path.
So assuming you are in your home directory, any of the following can work:

thank you very much!! It works by executing below:
#/app/work/hello.pl

The next step / question.

If the perl script is located at /app/work/, how could I make it as below

in the /app/work/ folder
#hello.pl

instead of typing
#/app/work/hello.pl

Reason: I am using the script frequently.

That mean i got to export the /app/work/ path into my .bashrc ?? How could I make it?
thank you!

Read about PATH environment variable (use WEB search engine of your liking). The concept of PATH, by the way, is not UNIX/Linux specific - Windows uses the concept too.

And/or read about "bash aliases" - again, use WEB search engine of your liking.

Hi,

If you want to add something to your PATH you can edit your /etc/profile (make it global for every user) or your ~/.bashrc (or ~/.bash_profile). The latter depends a bit on your distro.

As stated already by Sergei Steshenko, search the web for specifics (do include your distro name in the search).

Hope this helps.

If only required on a temporary basis, ie you might move directories later, then you can use the third option from post #3 when in the directory.

I have a directory called "bin" in my home dir and I added it to my (and only my) PATH using .bash_profile.