Answer Posted / sathe santosh

The above command will not work.
grep searches the 1st argument in 2nd argument(filename).
The filename has multiple patterns.

example:

cat 1.lst
hi
hello
bye

see the below message.

grep hi hello 1.lst
grep: can't open hello
1.lst:hi

same can be done using below command.

grep -e hi -e hello 1.lst

hi
hello

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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:

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