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 5235

what is linux utilities and editor

Oracle, Wipro,

4 8732

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

4 8402

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

BPO,

2 8191

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 8779

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

4 8734

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 12032

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 10382

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 6287

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 13377

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

CTS,

3 11273

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

Google,

5 18252

Difference between swap partition and swap file?

IIHT, TATA, Wipro,

4 22511

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

7 14014

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

2 7301

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Un-Answered Questions { Linux Commands }

What is nslookup command?

1078

If the programmer wishes to execute an instruction at the specified time. Which command is used?

1463

What is lsof command in linux?

1173

How to root mirror in linux?

1140

How can I delete a file in linux?

1129

What is echo command in batch file?

1145

What is makefile in unix?

1172

What is $@ in shell?

1004

What command used for showing user info like Login Name, Canonical Name, Home Directory,Shell etc..?

1198

What is make command in linux?

1144

How do I clear my run history?

1119

What is grep command?

987

Which daemon is used for scheduling of the commands?

1095

What does sh do in linux?

1015

How do I find my user id in linux?

977

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