Answer Posted / giridhar tarare

uniq command search the uniq data in file and if some
duplicate date then it put only single records in report.

For Example: cat testnumber.txt | uniq <enter>

File contents:
1233
456
678
1233
678

output file shows:
1233
456
678

What is grep short for?

749

---

What does awk stand for?

807

---

What are the commands in UNIX to list the files in a Directory?

824

---

How does shebang work?

808

---

How do you repeat a command in terminal?

846

---

What is command statement?

794

---

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:

1976

---

What is the use of sed command in unix?

843

---

What does pipe () return?

780

---

What is merge command in unix?

1145

---

Enlist some filename manipulation commands in unix.

760

---

Write a command that will display files in the current directory, in a colored, long format.

933

---

Give the command for finding the current date.

769

---

What is the use of tee command?

776

---

What is ‘ps’ command for?

858

---