1. W: GPG error: http://extras.ubuntu.com trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 16126D3A3E5C1192
1 apt-key adv --keyserver keyserver.ubuntu.com --recv-keys <KEY>
2. Ubuntu run chrome as root user
1 apt-get isntall hexedit 2 3 hexedit /opt/google/chrome/chrome 4 tab 5 ctr + s -> replace geteuid with getppid 6 ctr +x
3.Ubuntu 14.04 how to install flash player for chromimum
1 sudo add-apt-repository ppa:jonathonf/pepperflashplugin-nonfree 2 sudo apt update 3 sudo apt install pepperflashplugin-nonfree browser-plugin-freshplayer-pepperflash 4 5 6 sudo gedit /etc/chromium-browser/default (Add the following line at the end on a new line: . /usr/lib/pepflashplugin-installer/pepflashplayer.sh)
4.Ubuntu shadowsocks
1 apt-get install python-gevent python-pip 2 3 pip install shadowsocks 4 5 # ss.json 6 { 7 "server":"xxx.xxx.xxx.xxx", 8 "server_port":8388, 9 "local_address":"127.0.0.1", 10 "local_port":1080, 11 "password":"aaa", 12 "timeout":600, 13 "method":"aes-256-cfb", 14 "fast_open":false 15 } 16 17 sslocal -c ss.json -d start
5. How to install lxml on Ubuntu
https://stackoverflow.com/questions/6504810/how-to-install-lxml-on-ubuntu
6. diff
diff -ruN file.new file.old > patch.log patch file.old patch.log