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 9935

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

4 11437

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 7916

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

2 6395

to list a particular line in the file

5 8387

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

MEIT, Syntel,

5 13016

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

5 10638

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

2 10790

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

HCL, IBM,

4 13982

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

2734

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 8321

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

CTS,

7 14919

What is the difference between pipe and xargs?

Amazon, CTS,

2 16592

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

Amazon,

5 15108

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

Amazon,

7 15973

Un-Answered Questions { Unix }

What do you mean by the protection fault?

990

What's better 6pt or 12pt sockets?

814

What are data structures that are used for Demand Paging?

1001

Name the general commands in using unix os for a beginner?

1153

What is a regular file in unix?

980

Is unix the first operating system?

928

What is meant by the term nohup?

930

Explain the method of changing file access permission?

952

What is directory unix?

937

Is unix a network operating system?

915

What is ps1 and ps2 in unix?

984

What does touch command do in unix?

1417

Difference between the fork() and vfork() system call?

1004

What are the commands in UNIX to list the files in a Directory?

1178

What is .profile unix?

893

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