健忘的工程師筆記本

echo 0 > /sys/bus/usb/devices/usb1/authorized echo 1 > /sys/bus/usb/devices/usb1/authorized

1.   沒有現成的可以一鍵同步的方法。 2.   最方便的是用 GitHub Desktop ，請看下面圖示 點選 merge 在 fetch 3.   另一種就是用 command line. # git remote -v # git remote add upstream git@GIT.AVER.COM:EDU/FW/m10v/linux.git # git fetch upstream # git checkout S510-2 # git merge upstream/S510-2 # git push origin S510-2 --tags   若 upstream 上有新的 branch # git checkout upstream/S510-3 # git checkout -b  S510-3 # git push origin S510-3 --tags PS: 加上 --tags 才會將 tag 也一併同步   Reference: https://docs.github.com/en/free-pro-team@latest/github/collaborating-with-issues-and-pull-requests/syncing-a-fork https://www.peterdavehello.org/2014/02/update_forked_repository/ https://gitbook.tw/chapters/github/syncing-a-fork.html  

reference: https://linuxize.com/post/how-to-install-xrdp-on-ubuntu-20-04/ 我的 ubuntu 是 desktop 版本，所以不用安裝桌面套件 sudo apt install xrdp sudo adduser xrdp ssl-cert sudo systemctl restart xrdp sudo systemctl status xrdp 這樣就可以用 windows 遠端桌面開啟

The CONFIG_ROOT_NFS configuration option, which depends on CONFIG_IP_PNP. To enable root filesystem over NFS you must enable the "IP: kernel level autoconfiguration" option in the "Networking options" menu first.

將uboot bootargs 設成下面組合就可以 bootargs rootdelay=5 root=/dev/nfs rw nfsroot=$(serverip):$(rootpath),nolock,vers=4,tcp ip=dhcp nfsrootdebug bootargs rootdelay=5 root=/dev/nfs rw nfsroot=$(serverip):$(rootpath) ip=dhcp nfsrootdebug bootargs rootdelay=5 root=/dev/nfs nfsroot=$(serverip):$(rootpath),nolock,vers=4,tcp rw ip=$(ipaddr):$(serverip):0.0.0.0:255.255.255.0::eth0:off nfsrootdebug # nfsrootdebug --> 連線不成功, 可以debug # vers=4,tcp --> 連線不成功, 確認一下 server 的版本。nfsstat –s <<- Print server-side statistics                             新版 ubuntu 應該都是 v3/v4 了.

stty -F /dev/ttyS1 stty -F /dev/ttyS1 raw -echo -echoe -echok stty -F /dev/ttyS1 115200 stty -F /dev/ttyS1 speed stty -F /dev/ttyS2 stty -F /dev/ttyS2 raw -echo -echoe -echok stty -F /dev/ttyS2 115200 stty -F /dev/ttyS2 speed Statistics # cat /proc/tty/driver/<driver_name> reference: http://www.armadeus.org/wiki/index.php?title=Serial_ports_usage_on_Linux