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

Linux Commands Interview Questions

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Hi All of Unix/Linux professional Q.Why soft link file not open by cat command. Ihave make following symbolic link but when i open with #cat linkfilename it does not oped please see the following code and try to answer. # ln -s file1 ~/mydir/filea [root@dhcppc0 ~]# cd mydir [root@dhcppc0 mydir]# ls -l total 4 lrwxrwxrwx 1 root root 5 2010-04-04 09:04 filea -> file1 [root@dhcppc0 mydir]# cat filea cat: filea: No such file or directory

2 5104

what is linux utilities and editor

Oracle, Wipro,

4 8568

what is snmp and for what purpose we are using in linux

4 8223

if i run ls command it will show me the junk output what is problem and how to resolve it

BPO,

2 8077

if i have one folder say aaa and that folder having 100 files from that 50 files there aaa word is written how to find in which aaa is writen and without opening that file

6 8549

what r the different command to check ram,process and hdd of linux machine

4 8535

A file which is not deleted by normal user and also root (using rm), for that type of file how we delete it?

CTS,

5 11807

I lost a root password and i need to give it, I treid to change it through single usermode even though i am not get a password, then what is the other procedure to give a root password?

8 10128

My linux machine is crashed due to root file system, I need not to bother about the root file system, but i need to take care of /etc, /usr, like that.,, can i recover these file systems?

2 6142

How can I know my linux os is 32 bit or 64 bit? and How can i know my CPU is 32 bit or 64 bit in linux machine environment.?

7 13129

I want to kill zombie process, but with using kill 9 i cannot kill that process? can u tell other commands?

CTS,

3 11115

In my linux machine, i lost /etc/passwd file and /etc/shadow file, then how can i recover it?

Google,

5 18052

Difference between swap partition and swap file?

IIHT, TATA, Wipro,

4 22335

How to monitor ports in a linux machine, with single command?

7 13739

What is the status code 403,404 represented in apache server?

2 7209

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Un-Answered Questions { Linux Commands }

What is mask and umask in linux?

1010

How do I search bash history?

879

What is bash history linux?

1018

What command would you use to check how much memory is being used by linux?

1020

Brief about the command kill PID?

1075

What is difference between sh and bash?

991

What are the examples of simple command?

1085

Explain about system and user utilities?

962

What is the use of cp p command?

1091

You wish to print a file ‘draft’ with 60 lines to a page. What command would you use?

961

How do I change shell in linux?

1041

What does the command env do?

999

What is cd in cmd?

926

How to recover /etc/passwd file and /etc/shadow file?

984

How does diff command work?

960

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