what is the cmd to display the last exit status in UNIX?
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Which command is used to kill the last background job?
Who wrote grep?
How is the command '$cat file2 ' different from '$cat >file2 and >> redirection operators ?
What do chown command do?
What is rmdir command?
What is the use of tee command?
What are reported commands?
Explain the terms ‘system calls’ and ‘library functions’ with respect to unix commands?
What is the nmap command?
What is awk good for?
How do you grep recursively?
Which unix command lists files/folders in alphabetical order?
Explain ‘library functions’ with respect to unix commands?
Write a command to display a file’s contents in various formats?
Describe the zip/unzip command using gzip.