Zafar Ahmed Ansari
Indian Institute of Technology
Jodhpur,
Rajasthan,
India.
Here are some useful tools to know about:
1. Sed is a special editor for modifying files automatically. If you want to write a program to make changes in a file in Unix based environment, sed is the tool to use.
2. Awk is another extremely versatile programming language for working on files.
3. GNU Aspell is a free and open source spell checker.