In the following sequence, if wpa_supplicant is not present in the path, the error printed is "cannot find awk, please install" rather than the correct message "cannot find wpa_supplicant, please install".

# check for needed tools
#
for i in iwconfig wlanctl-ng hexdump sed awk ; do
if [ -z "`type -p $i`" ] ; then
    err_mesg "cannot find '$i', please install"
    exit $R_ERROR
fi
done

if [ -z "`type -p wpa_supplicant`" ]; then
    if need_wpa_supplicant ; then
        err_mesg "cannot find '$i', please install"
        exit $R_ERROR
    fi
    PREFER_WPA_SUPPLICANT=no
fi