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Unix Commands Interview Questions
Questions Answers Views Company eMail

how to delete entire records in unix ?

Cap Gemini,

13 21214

hw will u use awk in replacing cahrs and files

2539

How to see unused port number in Solaris?

HCL,

2 11183

What is the difference between udp and tcp?

HCL, TCS,

2 8968

their is a file1,file2 and i want to append file1 data to file2?

IBM,

9 11143

what is the default permission for /etc/shadow file in UNIX

Wipro,

2 8163

why metadb requires a seperate slice to create Solaris volume manager

Wipro,

2391

which script will invoke first ,when /etc/init.d starts

1 5020

What is the command to check ports active in UNIX?

Accenture, IBM,

4 10976

what these two commands prints "echo test","cat test"?

TCS, Wipro,

6 13670

How to get the last ten lines of a file using awk utility?

Infosys,

1 7280

How to add content of one file into another file at the beginning

12 13426

how to check a file system type

Wipro,

7 11476

How to replace the exact word in vi editor?? suppose a file contains words like amaze,amazed,amazement in some of the line.But i want to replace only 'amaze' with delight but don't wanna replace amazed or amazement. thanks

Polaris, Tech Mahindra,

6 9798

What does mkdir up2date; touch outdated up2date do?

2 5365


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Un-Answered Questions { Unix Commands }

Which command should you use to find the remaining disk space in unix server?

461


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

456


Explain command to view process running?

453


How do I clear my terminal history?

423


Does cp command overwrite files?

442






How do you grep a case insensitive?

383


Is there a way to erase all files in the current directory, including all its sub-directories, using only one command?

575


How do I use grep to find a file?

421


What happens when we execute a unix command?

449


What is the use of tee command?

406


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

487


Which command is used to kill the last background job?

566


What is rmdir command?

396


What is the command to find hidden files in the current directory?

423


Is ‘du’ a command? If so, what is its use?

450