Perl Overview Files index index of files GenBank files library.gb GenBank library file pccx1.gb GenBank formated gene: pccx1 program files dups.txt polya tail duplicate aaaa lines no_dups.pl script to remove duplicate lines print_all.pl scripts to print all files on command line print_all2.pl print_all3.pl print_all4.pl see_env.pl scripts to see environment variables see_env2.pl chapter 1 concepts testch1.pl various examples in a test script