Unix Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Unix Interview Questions

Questions Answers Views Company eMail

how will you login one server's shell prompt to an another server?

5 9734

how will you convert a general file to a hidden file?

4 11280

hi i have directories within the directory. Now i want to copy the directory along with all directories included in it to one location by using copy command? what is the command

ACS, Span Systems,

2 7793

What is the different between UNIX command and UNIX shell script?

2 6260

to list a particular line in the file

5 8230

what is the cmd to display the last exit status in UNIX?

MEIT, Syntel,

5 12841

what is the cmd to remove the comment lines from a file and to display the original text without comments? thanks in advance......

5 10429

What is an Unix command to convert HEX value to ASCII value located in any flat file.

2 10671

How can i know my Filesystem and its current usage in my prod UNIX system?

HCL, IBM,

4 13828

I am new to Unix and Unix Shell scripting could you guide me on how to go about these subjects and where to start from with concern to Oracle?. I also would like to know where does UNIX shell Scripting help in terms of development of a application in Oracle? I have no clue in the subject so do help me. Thank You Neelima

2695

Interviewer: Lets say there is a partition of 100GB. When i tried to create a file using touch command, under any directory, it was unable to create the file- '100% full disk space'. I calculated the size of each and every directory on that partition mannually by adding each file size & in came out to be total size 50GB. Then where is the remaining 50GB ? why it is showing disk space 100% full in 'df -h' command?

Infosys,

2 8216

A file has 1000 lines and i want to display only 1st line how to do it? pls ..tel me

CTS,

7 14695

What is the difference between pipe and xargs?

Amazon, CTS,

2 16486

How to find the files that are accessed before 10 minutes?

Amazon,

5 14916

By using which command we can find the CPU utilization time?

Amazon,

7 15758

Un-Answered Questions { Unix }

How zip the file in unix?

979

Is unix only for supercomputers?

838

What do know about tee command?

1118

Is unix portable?

952

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

1175

How do I grep recursively in unix?

901

How do you start and stop services in unix without using admin console?

1011

How to perform a system shutdown in unix?

915

What does grep v grep do?

1037

Explain what is standard unix streams ?

929

How would you identify daemons in unix?

930

What are the various ids in unix processes?

867

What are the possible return values of kill() system call?

803

What are the types of sockets?

880

What is difference between socket and websocket?

851

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