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What is rmdir command?

555

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What is ctrl d?

596

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How do I delete files from command prompt?

553

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What is a command and examples?

587

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What is time_t?

588

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

824

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How can you see the command line history?

586

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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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How to use grep command to list find the records of a file containing 10 different strings?

646

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Explain command to view process running?

617

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What does the metacharacter mean?

611

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What is the size of time_t?

651

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What is command substitution?

627

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What is {} in find command?

584

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What is s and g in sed command?

561

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