Answer Posted / khemnath chauhan

grep command let us find the desire pattern in given
statements or from contents of file.
SYNOPSIS:
$grep <pettern to search> <file name>
this will find the particular pattern.

Who invented grep?

1108

---

What is nr in awk command?

1136

---

What does the md command do?

1075

---

What is the use of find command in unix?

1078

---

What command will change your prompt to myprompt?

1253

---

What is the difference between cat and more command?

1227

---

What do chmod command do?

1142

---

What does this command do,"$more readme.txt“?

1102

---

hw will u use awk in replacing cahrs and files

3183

---

Explain ‘system calls’ with respect to unix commands?

1041

---

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:

2203

---

Which command will print your home directory on screen?

1033

---

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

1339

---

How do I search for text in vi?

991

---

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

1159

---