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Unix Commands Interview Questions
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Suppose 1000 processes are running on the system out of those if you have to show only certain process ids which command will you use?

 5 10908

What is the syntax of grep command and what is its use?

 6 10012

How do you move a process which is running background to foreground?

 9 15263

How do you stop a running process?

 7 14259

What is the procedure of "at" and crontab" commands?

 4 9784

Which command will you use to change the permissions on file?

 7 8717

What is the use of pipes?

 4 8049

Through which command will redirect output to bOth screen and files at the same time?

 3 9561

How do you know about running processes of a particular user?

 11 17609

How do you remove a crontab file?

 6 16831

What is the basic difference between unix and windows operating systems?

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43 167968

How do you find path of a directory? Give its syntax.

 7 13909

In vi editor how do you execute unix commands?

 10 18853

what is the use of "test" command in unix?

 4 19803

Give a regular expression that finds two things, try to come up with regular expressions that find each individually using "egrep" command?

 5 13275

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Un-Answered Questions { Unix Commands }

Write a command that will allow a unix system to shut down in 15 minutes, after which it will perform a reboot.

615

What is awk used for?

611

What is time_t?

578

What is the functionality of a top command?

615

What is the command to find maximum memory taking process on the server?

661




How does pipe () work?

585

Which command will print your home directory on screen?

537

What is unix command line?

598

Does cp command overwrite files?

614

What is a bash command?

620

What is ‘ps’ command for?

608

What does pipe () return?

584

What is pipe command in unix?

662

Explain the steps that a shell follows while processing a command.

677

What is the pipe command?

568

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