Answer Posted / ravikumar reddy .dubba

pipe(|):--pipe is the symbol which is used to combine 2
filters,2 commands or filter and command,

When we combine two operations by using pipe, first
operation o/p acts standard i/p for second operation ,and
second operation gives Standard o/p,

Tee:--tee is the command, we can copy a file data to
multiple files at a time



dubba.ravikumarreddy@gmail.com

What is the use of the command 'ls -x chapter[1-5]' ?

661

---

What is the difference between awk and grep?

561

---

What is {} in find command?

584

---

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

761

---

What do chgrp command do?

590

---

---

What is unix command?

584

---

Can you explain a little bit about command substitution?

610

---

What is grep in bash?

586

---

What is the significance of the 'tee' command?

596

---

What do chown command do?

536

---

What will the following command do?

615

---

Write a command to kill the last background job?

618

---

How do I find previous commands in unix?

592

---

How do I delete files from command prompt?

549

---

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:

1758

---