Can you explain a little bit about command substitution?

1118

Is grep faster than awk?

1047

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:

2273

What is time_t?

1119

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

1267

What is ctrl d?

1103

Is there a way to erase all files in the current directory, including all its sub-directories, using only one command?

1409

Explain ‘library functions’ with respect to unix commands?

1175

How do you repeat a command in terminal?

1232

What is awk used for?

1138

What is ‘ps’ command for?

1188

What is the function of grep command in unix?

1187

Name the general commands in using unix os for a beginner?

1169

What do know about tee command and its usage?

1187

What will the following command do?

1127