Answer Posted / sudam

We can use the below commands for creating a file
touch, cat, vi, vim, pico
A) touch: touch <file name>
B) cat: cat > <file name>
C) vi: vi <file name>
D) vim: vim <file name>
E) pico: pico <file name>

Who command in unix operating system?

850

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What difference between cmp and diff commands?

944

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What is the difference between awk and grep?

790

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How to display no of records in oracle using unix command?

793

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Write a command to display a file’s contents in various formats?

843

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What is time_t?

771

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

765

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How do I search for text in vi?

757

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

892

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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:

1961

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What do chgrp command do?

817

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How is the command '$cat file2 ' different from '$cat >file2 and >> redirection operators ?

965

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What does the metacharacter mean?

795

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What is the function of grep command in unix?

779

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

826

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