Running perl script in debug mode

[Shivkumar]

Hello,

We run shell script in debug mode using the switch -x as below.
#!/bin/sh -x

How do we run perl script in debug mode similar to the above one ?

Thanks,
Shiv

[Ganesan R]

Hi Shivkumar,

#perl -d <script name>

[Ganesan R]

Hi,

perl man page is here..

http://www.zedat.fu-berlin.de/cgi-bin/compute/perl.cgi

[James R. Ferguson]

Hi Shiv:

This is a bit different. First, always use the 'strict' and 'warnings' pragma. You can get more detailed warnings by adding the 'diagnostics' pragma. You can always add your own debugging print statements too.

You can syntax check with:

# perl -c

You should see:

# man perldebtut
# perldoc perldebtut

...for more gory details.

Since Perl is compiled before it executes, unlike the interpretative shell, a successful compilation ('perl -c') means that syntactically all is OK. Whether or not the code does what you want or not, however, is the matter with computers :-)

Regards!

...JRF...