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 6533

boot process?

Atos Origin, Wipro,

2 7796

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:

2317

how to unzip the contents of the gzip file

Epsilon,

1 3471

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

Epsilon,

1833

How to find $ai_serual resolved path by using unix

1840

What does 'mkdir' command do in UNIX?

Syntel, Visa,

1370

What is the functionality of a top command?

Amazon,

1158

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

CGI,

1253

What is the use of touch command in there?

Accenture,

1 2497

What is ‘ps’ command for?

1239

What is the significance of the 'tee' command?

1253

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

1324

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

1299

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

1357

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Un-Answered Questions { Unix Commands }

What is the difference between cat and more command?

1364

How do you grep a case insensitive?

1112

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

1317

What is the use of find command in unix?

1210

What is the size of time_t?

1271

Who command in unix operating system?

1190

What is the use of egrep command in unix?

1242

What is pipe command in unix?

1362

What do chown command do?

1257

What is the use of cut command in unix?

1427

Explain command to show the space allocation of files?

1170

How can you see the command line history?

1185

What are the unix commands?

1152

What's a command word?

1246

How does pipe () work?

1146

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