Answer Posted / kesava swamy pindi

Yes, we can use 'cat' command as an editor.

Ex: cat > names.txt
hai
hello
ctrl+c
Here, iam creating a file called 'names.txt'. If this file
already exists, the old contents of the file will be
overwritten; else new empty file is created and data is
placed in this file.

Also, we can append new content to existing file using cat
command.

Ex: cat >> names.txt
bye
crtl+c

Who command in unix?

1090

---

What is the command to view process running?

1068

---

What does #!/ Bin sh do?

1016

---

What are the differences among a system call, a library function, and a unix command?

1148

---

What is awk used for?

1077

---

What does awk stand for?

1033

---

What command will change your prompt to myprompt?

1251

---

How can you see the command line history?

1076

---

How do you repeat a command in terminal?

1151

---

What is in grep command?

1119

---

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

1156

---

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

1336

---

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:

2202

---

What does the “echo” command do?

1097

---

How many unix commands are there?

1098

---