GNU sed - sed (stream editor) is a Unix utility that parses text and implements a programming language which...
Perl - Highly capable, feature-rich programming language with over 26 years of development
AWK - Linux users can perform many types of searching, replacing and report generating tasks by using awk, grep and sed commands.
TXR - Pragmatic, convenient data munging language.
Ruby - A dynamic, interpreted, open source programming language with a focus on simplicity and productivity
Python - Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.