#!/usr/bin/perl -wl use strict; for (sort{ # TYPE: $t0_$t1_ # Part: $p0_ # Det : $pda # Rev : $r_ # ALT : $alt_ # Layer $l_ my ($t0a,$t1a,$p0a,$pda,$ra,$alta,$la) = map(m!(\d+)(\D+)(\d+)(\D*)R(\d+)B?(\d*)\.(\w+)$!,$a); my ($t0b,$t1b,$p0b,$pdb,$rb,$altb,$lb) = map(m!(\d+)(\D+)(\d+)(\D*)R(\d+)B?(\d*)\.(\w+)$!,$b); $la cmp $lb || ($altb eq ''? 0 :$altb) <=> ($alta eq '' ? 0 : $alta) || $t0a <=> $t0b || $t1a cmp $t1b || $p0a <=> $p0b || $ra cmp $rb || $pda cmp $pdb; }){ chomp; print; } __DATA__ 18DD13AR0B2.vec 5A344R2B15.ras 5A344R2B15.vec 5A35SR0.ras 113A28R1.vec 113A28AR0.vec 113A29R0.ras 5A32R0.ras 113A29R1.vec 18AD13XR0B3.ras 18AD13XR0B3.vec 113A22R1.ras 5A35R0.vec 5A34R0.ras 113A22R1.vec 18DD12YR0B2.vec 18DD13AR0B2.ras 113A29AR0.ras 113A29AR2.vec 113A28R0.vec 5A33R0.vec 5A34R0.vec 5A35R0.ras 113A28AR2.vec 113B28R2.ras 113A28R2.vec 13B29AR0B1.ras 113B29AR0B1.vec 5A32R0.vec 5A33R0.ras