Also, your slashes are backwards.
So the correct typing for the commands is actually:
Code:
[COLOR=#3e3e3e][FONT=Verdana]./adb push ics_247.zip /sdcard-ext/ics_247.zip[/FONT][/COLOR] [COLOR=#3e3e3e][FONT=Verdana]sudo ./moto-fastboot reboot-bootloader[/FONT][/COLOR] [COLOR=#3e3e3e][FONT=Verdana]sudo ./moto-fastboot flash system 905_FXZ/system.img[/FONT][/COLOR] [COLOR=#3e3e3e][FONT=Verdana]sudo ./moto-fastboot flash boot 247/boot.img[/FONT][/COLOR] [COLOR=#3e3e3e][FONT=Verdana]sudo ./moto-fastboot flash preinstall 905_FXZ/preinstall.img[/FONT][/COLOR]
Please note that this worked for me, but I also had the files/folders set up my own way, so they might not work for other people/other Linux distributions