Answer Posted / t.sai sree,guntur.

os is the Interphase between user and the hardware.
kernel:It is the Heart or core of the unix os.It is very
crucial and important for unix os.

How do I find previous commands in unix?

682

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How do I run a bash script?

671

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How do you grep recursively?

656

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what is the advaantage of each user having its own copy of the shell?

2148

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Name the various commands that are used for the user information in unix.

638

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What is used to type command?

634

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What does the md command do?

659

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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:

1850

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How do I search for a file in unix command?

634

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What is the functionality of a top command?

704

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What is a bash command?

718

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What is grep r?

681

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Explain command to view process running?

699

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

892

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

692

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