Answer Posted / sailesh k

Shell programming is wrong terminology. Its shell scripting.

There is difference between scripting and programming. Unix
is shell scripting.

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

1265

---

Give the command for finding the current date.

1172

---

What is rmdir command?

1152

---

Using unix command how to display no of records in oracle?

1207

---

Explain mount and unmount command.

1278

---

What does 'mkdir' command do in UNIX?

1368

---

What is the use of sed command in unix?

1258

---

What does this command do? Cat food 1 > kitty

1635

---

What is the pipe command?

1242

---

What are some command words?

1202

---

Which command should you use to find the remaining disk space in unix server?

1347

---

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:

2317

---

What is {} in find command?

1154

---

What is the difference between cat command and more command?

1267

---

Why is shebang used?

1191

---