I was supposed to modify the echo.c code of MINIX. I moved to the directory : /usr/src/commands/simple and created the echo.c file with vi editor.
I compiled it (cc) and then edited Makefile with vi editor. (Actually added echo where was needed)
Then i moved to usr/src and hit: "make world" to translate Minix' core and after:"hdboot" to use the new one. But i'm still confused on how i'm supposed to run the new echo.
I found the echo code of MINIX to ...../commands/ash/bltin and i see that despite what i've done that's the one still used by MINIX.
(If i just wanted to run my echo.c file with MINIX what would i have to do?)