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

Unix Interview Questions

Questions Answers Views Company eMail

What is the difference between udp and tcp?

2 10726

Am using Mac OS 10.4.11 on an Imac (PPC) Internal hard disk got named disk0s3 and will not mount. What commands can be used in TERMINAL to rename the internal hard disk to C96?

2567

their is a file1,file2 and i want to append file1 data to file2?

IBM,

9 14582

how you know the ip address of user system?

Polaris,

9 12690

how to list all the hidden files?

Polaris,

10 14414

what is the default permission for /etc/shadow file in UNIX

Wipro,

2 9711

why metadb requires a seperate slice to create Solaris volume manager

Wipro,

3100

which script will invoke first ,when /etc/init.d starts

1 6414

What is the command to check ports active in UNIX?

Accenture, IBM,

4 13383

what these two commands prints "echo test","cat test"?

TCS, Wipro,

6 16261

how to kernel protected memory?

2344

How to give root privileges without using SU/sudor ?

1 5991

what is difference between milestone and run-levels in Solaris ?

3039

How to get the last ten lines of a file using awk utility?

Infosys,

1 8593

Is this the command to connect oracle from unix? sqlplus -s username/password. Then what is the -S here...????

TCS,

1 5601

Un-Answered Questions { Unix }

Can a socket have multiple ports?

823

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

1306

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

1225

What are links and symbolic links in UNIX file system?

937

Differentiate cat command from more command.

1096

Explain how do you create special files like named pipes and device files?

908

What is unix operating system and its features?

881

Why is grep called grep?

1243

Explain the following statement, “it is not advisable to use root as the default login.”

855

What is af_inet in socket?

791

How can you see the command line history?

1089

i m putting 2.6yrs fake exp in oracle/unix production support i want to know some real time issues,like tell me the challenging issue u ever faced? my project is credit card application plz help me!

13321

Who is founder of unix?

1025

How to give execute permission for a file in unix?

974

Is a directory unix?

838

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