slight correction to the above.
Update Box Image & plugins
Using Open PacKaGe Management
Update Image
opkg update updates the image feeds located in /etc/opkg/ ( off the top of my head may be a slightly different path ) if you run this command it will not update any thing on the image but allow the image to know updates are there.
Update Plugins
opkg upgrade is the command that updates the image and or plugins as identified by the above opkg update command. when using these commands i recommend you first place enigma into a sleeping state so that any changes that are made have less risk of becoming corrupted as they may when being updated while there in a live / running state.
Here are some other commands that i use regularly with ViX although most if not all are universal to all images, along with a brief description of what the commands do as i understand them ( so some may be wrong or not 100 percent accurate ) but all these commands work as i use them my self.
init codes.
init 1 closes all running files.
init 3 wake enigma from a sleeping state / GUI restart.
init 4 Kill enigma / places enigma into sleep mode allowing you to edit or modify files that otherwise would corrupt or become damages if edited while live.
init 6 Full reboot.
you can also use the following commands.
shutdown -r now = basically the same as the above init 6 command
shutdown -h now = Full shutdown.
lsusb = lists all attached USB devices
df -h = checks memory and storage stats.
nmap -sp 192.168.1.0/24 = allows you to map your local network ( change the address as needed to map your own network )
cat /proc/meminfo = memory info
opkg update && opkg list-upgradable = allows you to check what is available to update on the image.
opkg download = allows you to download plugins directly from the images own feeds in a installable .ipk format to the /home/root/ directory of your receiver for safe keeping etc. a couple of examples as follows.
opkg download enigma2-plugin-extensions-backupsuite
opkg download enigma2-plugin-systemplugins-autobouquetsmaker
opkg install = allows you to install plugins directly from the image feeds., a few examples below.
opkg install enigma2-plugin-systemplugins-autobouquetsmaker
opkg install enigma2-plugin-extensions-backupsuite
opkg install enigma2-plugin-extensions-ondemand