Interested to Buy Any Domain ? << Click Here >> for more details...
What Happens when you execute a command?
- 3 Answers
- 13239 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / amit
When command is given then unix os will fork the shell i.e
will creat a new process and will execute the command using
exec command...something like suppose you gave command "ls"
in the shell then...
fork();
exec(ls);
It will give you the result and after this the child process
will die.
| Is This Answer Correct ? | 17 Yes | 2 No |
Answer / basha
Hi
command execute process used by shell
it will check
1.physical memory
a)alias
b)functions
2.HDD
c)builtin commands
d)path
e)execute permission
f)system calls FORK_EXEC_EXIT
it it founds then it will execute and give the info other
wise it shows shell name and not founs.
| Is This Answer Correct ? | 2 Yes | 2 No |
Answer / kumar
os calls exec() function to execute the command and
displays the output
| Is This Answer Correct ? | 0 Yes | 1 No |
what about the initial process sequence while the system boots up?
What is ln(linking)?
Which ipc is the fastest in unix?
set-user-id is related to (in unix)
What is i-node numbers?
What is a Daemon?
Please describe the initial process sequence while the system boots up?
What is IPC? What are the various schemes available?
What is daemon?
Predict the output of the following program code main() { fork(); printf("Hello World!"); }
What is Inode.
Explain the system calls used for process management?
Unix Commands 
