Shell Programming and Scripting

C_Random_130417
Java_Random_130518
Perl_Random_120519
Perl_Random_120528

Perl_Random_120519
Perl_Random_120528
C_Random_130417
Java_Random_130518

sort -t'_' -k3n file

awk -F_ '{ print $NF,$0 }' file | sort -n | awk '{ print $NF }'

#!/usr/bin/env bash

# @(#) s1	Demonstrate specify field from right end, msort.
# See: http://freecode.com/projects/msort

# Utility functions: print-as-echo, print-line-with-visual-space, debug.
# export PATH="/usr/local/bin:/usr/bin:/bin"
pe() { for _i;do printf "%s" "$_i";done; printf "\n"; }
pl() { pe;pe "-----" ;pe "$*"; }
db() { ( printf " db, ";for _i;do printf "%s" "$_i";done;printf "\n" ) >&2 ; }
db() { : ; }
C=$HOME/bin/context && [ -f $C ] && $C msort

FILE=${1-data1}

pl " Input data file $FILE:"
head $FILE

pl " Results:"
msort -q -l -j -d "_" --position -1 -c n $FILE

exit 0

$ ./s1

Environment: LC_ALL = C, LANG = C
(Versions displayed with local utility "version")
OS, ker|rel, machine: Linux, 2.6.26-2-amd64, x86_64
Distribution        : Debian GNU/Linux 5.0.8 (lenny) 
bash GNU bash 3.2.39
msort 8.44

-----
 Input data file data1:
C_Random_Random1_130724
Java_Random_130523
C_Random_130417
Java_Random_130518
Perl_Random_120519
Perl_Random_120528

-----
 Results:
Perl_Random_120519
Perl_Random_120528
C_Random_130417
Java_Random_130518
Java_Random_130523
C_Random_Random1_130724