Answer Posted / rahul

It's not shell programming, it's shell scripting. A collection of commands to execute written in shell-scripting. So that we don't need to memorize the no. of commands. These scripts can work automatically. 
where shell works as an interpreter in Unix system

What does find command return in unix?

597

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What is the use of find command in unix?

588

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Why is awk called awk?

581

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What do chgrp command do?

592

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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:

1764

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What is the nmap command?

585

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Describe the usage and functionality of the command rm –r * in unix?

827

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What is “chmod” command?

567

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Does cp command overwrite files?

626

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Write a command that will allow a unix system to shut down in 15 minutes, after which it will perform a reboot.

628

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What is the comma to display different lines that are found when compare two files?

595

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What does #!/ Bin sh do?

595

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What are file commands?

656

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Which command is used to copy files?

557

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

772

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