Answer Posted / ashu

yes a process can kill itself in UNIX.if two people are logged into server using same user-name at same point of time.if they select or edit the data from the same file.Then this will happen.

Explain ‘system calls’ with respect to unix commands?

1158

---

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:

2321

---

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

1257

---

What do chown command do?

1259

---

What is the pipe command?

1247

---

Why is grep called grep?

1365

---

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

1361

---

How do I find previous commands in unix?

1252

---

What is the use of find command in unix?

1216

---

Which unix command lists files/folders in alphabetical order?

1853

---

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

1220

---

Is it inbetween or in between?

1110

---

How do I search a whole word in vim?

1224

---

Who invented grep?

1213

---

Explain ‘library functions’ with respect to unix commands?

1217

---