what is the cmd to display the last exit status in UNIX?
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Explain ‘system calls’ with respect to unix commands?
What does touch command do in unix?
Enlist some filename manipulation commands in unix.
Who invented grep?
What is grep and how do you use it?
Why is it called a shebang?
What is command statement?
What will the following command do?
What is the search command in unix?
What are the differences among a system call, a library function, and a unix command?
Write a command that will allow a unix system to shut down in 15 minutes, after which it will perform a reboot.
What does the command '$ls | wc –l > file1' do?
Explain command to show the space allocation of files?
What do chown command do?
What is the comma to show the space allocation of files?