Answer Posted / susanta polley

sed -e 's/^#//g' input_filename > output_filename

How do you repeat a command in terminal?

874

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What are grep patterns?

795

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Give the command for finding the current date.

794

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Differentiate cat command from more command.

817

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What is unix command line?

850

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What is the functionality of a top command?

859

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What do chmod, chown, chgrp commands do?

932

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What is rmdir command?

820

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

947

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What does find command return in unix?

880

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What does this command do,"$more readme.txt“?

897

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How does pipe () work?

818

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How do you grep recursively?

801

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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:

2001

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What does the “echo” command do?

870

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