What Happens when you execute a command? Ans. When you enter 'ls' command to look at the contents of your current working directory, UNIX does a series of things to create an environment for 'ls' and the run it: The shell has UNIX perform a fork. This creates a new process that the shell will use to run the ls program. The shell has UNIX perform an exec of the 'ls' program. This replaces the shell program and data with the program and data for 'ls' and then starts running that new program. The 'ls' program is loaded into the new process context, replacing the text and data of the shell. The 'ls' program performs its task, listing the contents of the current directory.

Warning: include(./views/auth.php): failed to open stream: Permission denied in /var/www/html/live/loginRightSlider.php on line 18

Warning: include(): Failed opening './views/auth.php' for inclusion (include_path='.:/usr/share/php') in /var/www/html/live/loginRightSlider.php on line 18

Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/live/makepost.php on line 52

Ashish Verma

01 Jan 1970 05:30 AM study24x7

What Happens when you execute a command? Ans. When you enter "ls" command to look at the contents of your current working directory, UNIX does a series of things to create an environment for "ls" and the run it: The shell has UNIX perform a fork. This creates a new process that ...

Web Development