What is OS?

What OS does?

Explain various UNIX OS types?

What is Linux? Give various kind of Linux versions available in market? Which one you work on?

Why testers need to know about UNIX?

How to connect from Windows machine to UNIX machine?

Compare Windows OS to UNIX OS?

How to create directory?

How to create file?

How to list files or directories?

How to identify whether it is file or directory?

How to navigate into directories? How to move forward and backward in directories?

What is relative path and absolute path?

How to check in which directory you are?

How to copy files in same directory and different directories?

How to rename file?

How to move files from one directory  to another directory?

How to remove files?

How to remove UNIX  folders?

How to change permission on UNIX file?

How to check size and owner of file?

How to check how much memory in system?

How to check what processes are running and how much system resources are utilising?

How to kill process taking too much memory?

How to check running processes?

What is process id and parent process id?

How to create file using vi command?

How to write content in file?

How to save file?

How to edit files like adding line, deleting lines etc?

What cat command does?

What pipe command does?

How can you see file content page by page?

What grep command does? Explain with example?

What are various shells exist in UNIX? Which one you like?

Explain shell programming? Give few examples?