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      • How to find world writable directories by "find" command?
        05/15/10
        find . -type d -perm -a+w -exec ls -lah {} \; > ww.txt

      • perl - handling sigint
        05/14/10
        Write a small Perl program that waits for 30 seconds and exits with printing “Bye”. If interrupted by any key before 30 second then print “Hello” before exiting.

        perl -e "$SIG{INT}= sub {print 'Hello';exit;};for ($i=0;$i<30;$i++){sleep 1;}; print 'bye';"

      • Perl Important links
        05/14/10
        Remove repeated characters from a string - http://www.perlmonks.org/?node_id=353072

        How to find and remove duplicate elements from an array? - http://www.perlmonks.org/?node_id=90493

        perlfaqs - http://perldoc.perl.org/perlfaq4.html

        perl references - http://www.sdsc.e

      • Perl - Difference Between my local our
        05/14/10
        The variables declared with my() are visible only within the scope of the block which names them. They are not visible outside of this block, not even in routines or blocks that it calls.

        local() variables, on the other hand, are visible to routines that are called from the block where t

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