request some grammar concept from c 2 perl

[key9]

Hi all

Just beginner of perl,need some concepts

Q1
How to access enviroment var in perl? eg PATH

Q2
in c we using argc to get application name , How to do that in perl

Q3
in c/cpp we have lib getopt/ boost/program_options ,what about perl?
eg can I have an easy way to do:
../foo.pl -c -max 100 -min 0
?


thank you very much
your key9

 

[anno4000]

Hi all

Just beginner of perl,need some concepts

Instead of answering your questions directly I'll point you to
the relevant documentation available through perldoc.

Q1
How to access enviroment var in perl? eg PATH

perldoc perlvar, look for %ENV

Q2
in c we using argc to get application name , How to do that in perl

perldoc perlvar, look for $0

Q3
in c/cpp we have lib getopt/ boost/program_options ,what about perl?
eg can I have an easy way to do:
./foo.pl -c -max 100 -min 0
?

perldoc GetOpt::Long
perldoc GetOpt::Std

Anno