which (binary) cd/ —> root /bin —> contains essential executables like cd, ls, mkdir, bash, etc /sbin —> system binaries only executed by root user eg mount, route, reboot, ping, etc /usr —> /bin —> non-essential installed binaries intended for end user /local —> /bin contains locally compiled binaries — echo $PATH /etc —> editable text configuration, text based config file that you can edit, ends in .conf /home —> contains different users ~ —> squiggly, normal file path when opening a termin...