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

0 Answers  

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hi i have directories within the directory. Now i want to copy the directory along with all directories included in it to one location by using copy command? what is the command

2 Answers   ACS, Span Systems,

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How do you execute a UNIX command in the background?

6 Answers  

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How we will execute previous command in vi editor?

8 Answers   Infosys,

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How we will execute previous command in vi editor?

3 Answers   IBM, Infosys,

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The rm command removes links to file. What does this mean? How then is a file deleted from the file system?

5 Answers  

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Write a command to find all of the files which have been accessed within the last 30 days.

14 Answers   Cisco,

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How to check whether some services are running in another server or not? Suppose i am currently in a server named A.I want to check whether some services are running in server B without logging into the server B.

3 Answers   Amazon, MBA, Syntel, TCS, Unisys,

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distinguish between multi-tasking,multi-user,multi- processing and time sharing?

4 Answers   Infosys, Nikhil Construction,

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What does pipe () return?

0 Answers  

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What does 'mkdir' command do in UNIX?

0 Answers   Syntel, Visa,

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what is virtual machine?

2 Answers   Infosys,

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