Minichel build-in: echo echo [option] - display all arg(s) -n do not output the trailing newline $ echo salut salut $ echo -n salut salut$ pwd pwd - print current working directoey $ pwd /home cd cd [opt/path](optional) - change the working directory - => cd $OLDPWD path => cd path nothing => cd $HOME $ pwd && cd .. && pwd /home/loic/Documents/Minishell /home/loic/Documents $ cd - && pwd /home/loic/Documents/Minishell env env - display environement variable unset unset [var] - unset var from env $ unset PWD $ echo -n |$PWD| ||$ export export [varname]=[value] $ export arg='export test' $ env | grep arg arg=export test return return [integer](optional) - do nothing and return the first argument $ return $ echo -n $? 0$ return 5 || echo value: $? value: 5 exit exit [value](optional) - exit shell and return value 🙇 Author Rio Loic (Lrio) Juffard Michel (Mjuffard)