Mercurial > repos > devteam > show_tail
view tailWrapper.pl @ 1:e1c9fd6651f8
Added quotes and brackets to appropriate command arguments
author | greg <greg@bx.psu.edu> |
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date | Mon, 01 Apr 2013 14:23:17 -0400 |
parents | 8bb4d908a523 |
children |
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#! /usr/bin/perl -w use strict; use warnings; # a wrapper for tail for use in galaxy # lessWrapper.pl [filename] [# lines to show] [output] die "Check arguments" unless @ARGV == 3; die "Line number should be an integer\n" unless $ARGV[1]=~ m/^\d+$/; open (OUT, ">$ARGV[2]") or die "Cannot create $ARGV[2]:$!\n"; open (TAIL, "tail -n $ARGV[1] $ARGV[0]|") or die "Cannot run tail:$!\n"; while (<TAIL>) { print OUT; } close OUT; close TAIL;