Mercurial > repos > devteam > show_beginning
view headWrapper.pl @ 2:f10412ed821f draft
planemo upload commit 00a7926c285bc4a339bd7deebf40b28f39c7d947-dirty
author | devteam |
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date | Tue, 21 Jul 2015 15:58:13 -0400 |
parents | ecca14446e6a |
children |
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#! /usr/bin/perl -w use strict; use warnings; # a wrapper for head for use in galaxy # headWrapper.pl [filename] [# lines to show] [output] die "Check arguments" unless @ARGV == 3; die "Line number must be an integer\n" unless $ARGV[1]=~ m/^\d+$/; open (OUT, ">$ARGV[2]") or die "Cannot create $ARGV[2]:$!\n"; open (HEAD, "head -n $ARGV[1] $ARGV[0]|") or die "Cannot run head:$!\n"; while (<HEAD>) { print OUT; } close OUT; close HEAD;