What is the use of egrep command in unix?

1135

Which command is used to delete all files in the current directory and all its sub-directories?

1217

What are grep patterns?

1032

What is grep r?

1049

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

1268

Who command in unix operating system?

1096

What is awk command used for?

1146

What is the comma to display different lines that are found when compare two files?

1099

What do chmod command do?

1149

What does the “echo” command do?

1105

Which command is used to restrict incoming messages?

1050

How does pipe () work?

1046

How do I run a whois command?

1112

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

1123

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:

2214