What is the Use of Symbolic Reference in PERL?

imavasu

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• May 3rd, 2008

> $name = "bam";> $$name = 1; # Sets $bam> ${$name} = 2; # Sets $bam> ${$name x 2} = 3; # Sets $bambam> $name->[0] = 4; # Sets $bam[0]symbolic reference means using a string as a reference.

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soumdgr8

• Aug 1st, 2015

If its UNIX (ish) Env., use below"perl #tail.pl #this will work for default behaviour of tail(i.e. last 10 lines), you can enhance it to tail certain no. of lines #usage : tail.pl ...

Arunesh

• Jun 15th, 2015

You can do it in one liner

Code
perl -lne push(@tail,$_);shift @tail if($#tail >=10);END{print $_ foreach(@tail)} filename

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imavasu

 Profile Answers by imavasu Questions by imavasu

• May 13th, 2008

Perl is like this but (being Perl) goes a step further. The following file handles are open by default:STDIN - Standard Input, for user control input, typically the keyboardSTDOUT - Standard Output,fo...

Fahad

• Sep 29th, 2006

Hi, this is what i found.STDERRThe special filehandle for standard error in any package.

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