help
supported built-in commands:
bp cardmgr cat cd
chmod config cp cpu
date deletedir descrypt dmesg
dramcfg drives dsputil echo
eeprom eval false ffuc
format help history ioerr
jobs kill ls md5
mesg mkboot mkdir morph
mv nanddb nice poweroff
pref ps pwd ramdisk
readb readl readw reboot
reset resume rm rmdir
savebin sleep suspend sysmon
t test time touch
trap true vol writeb
writel writew yyinfo usbclass
ver vin sm corefreq
dramfreq idspfreq dll cleandir
volcfg firmfl nvd nftl
romfs