Answer Posted / madhu

tar is an utility used for archiving files .

tar cvf archive_name file1 file2...

for extracting a tar file

tar xvf archive_name

Regards,
Madhu

What command is used to switching between users in unix?

763

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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:

1971

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1140

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866

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