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

Unix Interview Questions

Questions Answers Views Company eMail

Which command should you use to find the remaining disk space in unix server?

1345

What is the behavioural difference between cmp and diff commands?

1337

What is “chmod” command?

1236

Which command is used to find whether the system is 32 bit or 64 bit?

1194

Which unix command lists files/folders in alphabetical order?

2 1845

Name the various commands that are used for the user information in unix.

1130

Can you explain a little bit about command substitution?

1158

Describe the zip/unzip command using gzip.

1218

Explain the terms ‘system calls’ and ‘library functions’ with respect to unix commands?

1262

Explain ‘library functions’ with respect to unix commands?

1214

Can you write a command to erase all files in the current directory including all its sub-directories?

1 1717

What is the command to find hidden files in the current directory?

1235

What is the unix command to confirm a remote host is alive or not?

1277

What do chmod, chown, chgrp commands do?

1341

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

1262

Un-Answered Questions { Unix }

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

1203

What is af_unix?

905

Explain about shell aritmetic operators and functions?

1070

Explain how and when a DNS request is solved when a user tries to surf to the site www.abcdeg.in .Assume the user machine uses a local name server and sits on another network other than www.abcdef.in.

5139

What is the unix command to confirm a remote host is alive or not?

1277

How can I tell when a socket is closed on the other end?

1386

Is there any method to erase all files in the current directory, along with its all sub-directories, by using only one command?

1281

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

1063

How does shebang work?

1117

If your server is running on Unix and one of the sessions are keep on running without loading any data. how would you kill it?

1142

How do I clear my terminal history?

1228

What do you understand by the term single user system?

1011

Which command should you use to find the remaining disk space in unix server?

1345

How to change the password in unix operating system?

999

Which command is used to delete all files in the current directory and all its sub-directories?

1313

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