CPU burst time

[mithrandir]

If you want a very quick intro into shell scripts try this http://pegasus.rutgers.edu/~elflord/unix/bash-tute.html

Also if you want to learn more about bash in general - http://www.gnu.org/manual/bash-2.05a...shref_toc.html

[hermit]

just cant believe how good this forum is.

Thanking you so much . . i'll have a look and pick out the relevant information. if i need more help, i'll definitely ask

[hermit]

ober5861: even though u spoiled our aussie thread, i have to thank you for trying to help.

[ober]

anytime Hermit, anytime

[hermit]

Okay i got abit confused. I am suppose to write a program that act like shell in C

I need to use fork, strtok, wait, execvp, how am i going to implement that?

fork will create a parent and child process, correct me if i am wrong. I understand the logic, but how do i code it

[ober]

PM me... I'll check my code when I get home...

Have you ever used fork before? Basically, fork creates a child process and returns to PIDs... which you can use to run certain parts of your program... I can't remember which is which... but I think one returns 0 or 1 and the other returns a random number... I'll post some code later... it's really not that hard.

[Hammer]

Basic fork example (code is in no way complete):

pid_t pid;

switch (pid = fork())
{      
    case -1:    
        perror("fork failed");
        return (EXIT_FAILURE);
        break;
    case 0:
        /*
         * We're in the child, do whatever
         */
        break;
    default:
        /*
         * We're in the parent, do whatever
         */
        break;
}

There are pleny of complete examples around.

[ober]

here's my shell I wrote... I called it "obesh"... obe... shell?

[hermit]

thanking you for that oberrr

[Govtcheez]

Yes, and I'd like to thank you too, ober - I've got that class next term

[ober]

yeah... well it's not completely working... tho what I did have working got me like 34 out of 40 points...

[face_master]

it was one good aussie thread we had there...

[ober]

yeah... and I ruined it... whatcha gonna do about it?