What Happens when you execute a command?

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What Happens when you execute a command?..

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.

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17 Yes

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What Happens when you execute a command?..

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.

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What Happens when you execute a command?..

Answer / kumar

os calls exec() function to execute the command and
displays the output

Is This Answer Correct ?

0 Yes

1 No

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