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

Unix Commands Interview Questions

Questions Answers Views Company eMail

solaris Run level?

Wipro,

3 6410

boot process?

Atos Origin, Wipro,

2 7701

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:

2273

how to unzip the contents of the gzip file

Epsilon,

1 3408

how to sort the content of the file based on numeric values

Epsilon,

1789

How to find $ai_serual resolved path by using unix

1762

What does 'mkdir' command do in UNIX?

Syntel, Visa,

1314

What is the functionality of a top command?

Amazon,

1114

What are the commands in UNIX to list the files in a Directory?

CGI,

1192

What is the use of touch command in there?

Accenture,

1 2414

What is ‘ps’ command for?

1188

What is the significance of the 'tee' command?

1202

What does the command ' $who | sort –logfile > newfile' do?

1280

What does the command '$ls | wc –l > file1' do?

1237

How is the command '$cat file2 ' different from '$cat >file2 and >> redirection operators ?

1318

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Un-Answered Questions { Unix Commands }

What is rmdir command?

1115

How do I use grep to search for a file?

1059

Give the command for finding the current date.

1121

What is “chmod” command?

1186

What does the command ' $who | sort –logfile > newfile' do?

1280

Explain command to view process running?

1145

What does sed command do in unix?

1202

What is the difference between cat command and more command?

1212

Write a command that will find all text files in a directory such that it does not contain the word "amazing" in any form (that is, it must include the words amazing, amazing, or amazing)?

1575

What are the dos commands?

1267

What does grep v do?

1060

What does grep v grep do?

1083

What are the differences among a system call, a library function, and a unix command?

1232

How do I delete files from command prompt?

1227

Which unix command to make a new directory?

1152

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