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

Unix Commands Interview Questions

Questions Answers Views Company eMail

what is ls -ltd?

HCL,

5 15681

what is the command to print last 8 lines of any text file.

10 14676

How to install scsi driver in unix? give me explanation clearly?

HCL, TCS,

1 7847

Sorry to all Technical person for mistake of Question. Now i am post currect question Why copied file permission is changed in destination. When i give all permission i.e 777 to file and copy that to other location in destination the permission is 755. But if give permission 555 in destination that file permission is 555 and if give permission 444 to file after copy in destination the file permission is 444. These all are happening in normal user. How the umask value is calculate here really i am not understand. Please write the proper answer. Thanks in Advance

TCS,

3 8904

How i'll delete a particular line from the file? Please give answer as soon as possible. Thanks in advance.

IBM,

12 23110

How to display a file name which has zero bytes in size.

Polaris,

11 21124

what is the difference between KILL and KILL -9?

Informatica, Nutanix,

5 28345

what is the difference between SED and GREP ? Which one is more better and why?

IBM,

4 36735

how to find the 51th record of a file containing 100 records in unix.

IBM,

12 24450

If JFS file system is 100% full how we can increase the file system ?

3 7897

What is shrinking file system in AIX where it actually resides?

2385

when we installing aix os the ssh installed default?

2 5379

Where LOG fiels resides in AIX and pls tel me how to remove the log file

Vestas,

6 10750

write grep commands to select the lines that have exactly two characters

PSI Data Systems,

8 24872

How to check the flavor of UNIX?

HCL, Syntel,

8 26434

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Un-Answered Questions { Unix Commands }

What does sed command do in unix?

1127

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

1160

Write a command to display a file’s contents in various formats?

1160

What is the use of sed command in unix?

1152

What command is used to switching between users in unix?

1034

What is the difference between awk and grep?

1159

What happens when we execute a unix command?

1096

Are you in or at the office?

1082

What does this command do,"$more readme.txt“?

1109

Describe the usage and functionality of the command rm –r * in unix?

1985

What is the first character of the output in ls l command?

1167

What does #!/ Bin sh do?

1032

Which command is used to copy files?

1126

Why is it called grep?

978

What is {} in find command?

1065

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