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

Unix Commands Interview Questions

Questions Answers Views Company eMail

Suppose 1000 processes are running on the system out of those if you have to show only certain process ids which command will you use?

5 12660

What is the syntax of grep command and what is its use?

6 12037

How do you move a process which is running background to foreground?

9 17708

How do you stop a running process?

7 16574

What is the procedure of "at" and crontab" commands?

4 11728

Which command will you use to change the permissions on file?

7 10865

What is the use of pipes?

4 9418

Through which command will redirect output to bOth screen and files at the same time?

3 10924

How do you know about running processes of a particular user?

11 21033

How do you remove a crontab file?

6 18765

What is the basic difference between unix and windows operating systems?

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43 179393

How do you find path of a directory? Give its syntax.

7 16215

In vi editor how do you execute unix commands?

10 21877

what is the use of "test" command in unix?

4 21257

Give a regular expression that finds two things, try to come up with regular expressions that find each individually using "egrep" command?

5 14781

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Un-Answered Questions { Unix Commands }

What is the difference between cat command and more command?

1125

When i run a programm of orphan process. Instead of getting child's parent (ppid)=1 ..i get 1400 and it varies as per system. How can i findthe right soluion??? My pgm: #include # include int main() { int pid; pid=fork(); if(pid < 0) {exit(-1);} else if(pid==0) { printf("Child Process is Sleeping ..."); sleep(10); printf("Orphan Child's Parent ID : %u ",getppid()); } else { printf("Parent Process Completed ... %u ",getpid()); exit(0); } return 0; } Output:

2201

How do I use nslookup?

1036

Why is awk called awk?

1020

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

1155

What are some command words?

1082

what is the advaantage of each user having its own copy of the shell?

2504

How do I search a whole word in vim?

1126

What is unix command line?

1178

Enlist some filename manipulation commands in unix.

1085

What is the use of finger command?

1138

What is command statement?

1103

Explain command to display different lines that are found when compare two files?

1106

What are grep patterns?

1018

What do chown command do?

1115

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