both work as expected. dpkg -l listed all my packages, dpkg -l | grep -q obexftp, shows nothing, then echo $? will get 0, cause I have obexftp installed.
both work as expected.
dpkg -l listed all my packages,
dpkg -l | grep -q obexftp, shows nothing, then echo $? will get 0, cause I have obexftp installed.