What is grep in bash?
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What is difference between grep and find command in unix?
How do you change file permissions?
Which command will print your home directory on screen?
What command will bring user back to their home directory in UNIX?
what is virtual machine?
What is rmdir command?
Can you explain a little bit about command substitution?
what is the significance of "su" command?
What is the use of pipes?
The rm command removes links to file. What does this mean? How then is a file deleted from the file system?
how will you convert a general file to a hidden file?
What will the following command do?