Import a path defined in bashrc to perl script

Question

I've defined a path (say, $MYPAT) in .bashrc file and I would like to use it in perl scripts, so that inside the script I just can write open(IN, "<$MYPAT/dir1/... How can I import this variable to directly use it in my script?

I guess is the same problem posted here How to use aliases defined in .bashrc in shell script but applied to perl.

Thank you!

friedo · Accepted Answer · 2013-07-02 17:18:05Z

3

Assuming $MYPAT is an environment variable defined in your .bashrc, you can access it using the special %ENV hash in perl, which contains all the environment variables for your process. See %ENV in perlvar.

my $path = $ENV{MYPAT};

Also, as a stylistic note:

You should use lexical filehandles instead of globals
You should use the three-argument form of open.

So instead of

open(IN, "<$path/dir1/...")

make that

open my $fh, '<', "$path/dir1/..." or die "yadda yadda";

answered Jul 2, 2013 at 17:18

friedo

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2 Comments

PGreen Over a year ago

Thanks for your advice, I would apply your note. In case of using open my $fh, '<',... should I change while(<IN>){ to while(<>){?

friedo Over a year ago

Change it to while(<$fh>)

Mak_Thareja · Accepted Answer · 2013-07-10 05:31:23Z

1

There are so many modules for every work to make it possible. I think this module in CPAN would be helpful for you, just go through a little documentation.

Shell::Source

answered Jul 10, 2013 at 5:31

Mak_Thareja

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