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

Unix Commands Interview Questions

Questions Answers Views Company eMail

what is ls -ltd?

HCL,

5 16078

what is the command to print last 8 lines of any text file.

10 15185

How to install scsi driver in unix? give me explanation clearly?

HCL, TCS,

1 8008

Sorry to all Technical person for mistake of Question. Now i am post currect question Why copied file permission is changed in destination. When i give all permission i.e 777 to file and copy that to other location in destination the permission is 755. But if give permission 555 in destination that file permission is 555 and if give permission 444 to file after copy in destination the file permission is 444. These all are happening in normal user. How the umask value is calculate here really i am not understand. Please write the proper answer. Thanks in Advance

TCS,

3 9158

How i'll delete a particular line from the file? Please give answer as soon as possible. Thanks in advance.

IBM,

12 23865

How to display a file name which has zero bytes in size.

Polaris,

11 21885

what is the difference between KILL and KILL -9?

Informatica, Nutanix,

5 28835

what is the difference between SED and GREP ? Which one is more better and why?

IBM,

4 37085

how to find the 51th record of a file containing 100 records in unix.

IBM,

12 25403

If JFS file system is 100% full how we can increase the file system ?

3 8182

What is shrinking file system in AIX where it actually resides?

2487

when we installing aix os the ssh installed default?

2 5574

Where LOG fiels resides in AIX and pls tel me how to remove the log file

Vestas,

6 11244

write grep commands to select the lines that have exactly two characters

PSI Data Systems,

8 25407

How to check the flavor of UNIX?

HCL, Syntel,

8 26962

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Un-Answered Questions { Unix Commands }

Name the general commands in using unix os for a beginner?

1216

Using unix command how to display no of records in oracle?

1208

What difference between cmp and diff commands?

1352

How do you repeat a command in terminal?

1294

How do I clear my terminal history?

1230

Which command is used to kill the last background job?

1392

What is the general format of unix command syntax?

2029

What is the use of finger command?

1267

What is the search command in unix?

1133

What do know about tee command?

1222

How does pipe () work?

1146

Explain how to use grep command to list find the records of a file containing 10 different strings?

1125

What is command statement?

1241

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:

2318

What is the difference between cat command and more command?

1272

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