Answer Posted / guest

Job - lists the jobs that are running in the background
and foreground

Is grep faster than awk?

647

---

How do I find previous commands in unix?

681

---

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

781

---

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:

1849

---

What command is used to check the current users?

680

---

---

Explain the terms ‘system calls’ and ‘library functions’ with respect to unix commands?

759

---

Explain how to use grep command to list find the records of a file containing 10 different strings?

682

---

What is the nmap command?

686

---

Write a command to kill the last background job?

701

---

What do chmod command do?

682

---

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

767

---

What command is used to switching between users in unix?

656

---

How can we use grep command in unix?

701

---

How do you grep a case insensitive?

620

---

What does grep v grep do?

637

---