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 9689

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

4 11253

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 7784

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

2 6233

to list a particular line in the file

5 8196

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

MEIT, Syntel,

5 12814

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

5 10389

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

2 10661

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

HCL, IBM,

4 13815

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

2686

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 8201

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

CTS,

7 14661

What is the difference between pipe and xargs?

Amazon, CTS,

2 16478

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

Amazon,

5 14879

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

Amazon,

7 15734

Un-Answered Questions { Unix }

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

956

What is the pipe command?

1129

How do we change file access permissions?

1065

Is windows a unix operating system?

936

What is awk command used for?

1129

What does cd mean in unix?

860

Which data structure is used to maintain the file identification?

908

What are special characters in unix?

815

What is the chief difference between the –v and –x option s to set?

930

What do you mean by unix operating system?

850

What command is used to check the current users?

1069

How do I use TCP_NODELAY?

1499

What is meant by the term super user?

833

What happens when we execute a unix command?

1093

What is a unix shell?

928

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