DevNotes - wongxinjie/wongxinjie.github.io GitHub Wiki

升级python3.4 ==> python3.5

sudo add-apt-repository ppa:deadsnakes
sudo apt-get update
sudo apt-get install python3.5
sudo rm /usr/bin/python3
sudo ln -s /usr/bin/python3.5  /usr/bin/python3

机器集群存在的坑

1. 时间同步, CST/HKT等等, ntpdate asia.pool.ntp.org

dpkg安装提示缺少依赖

sudo apt-get -f install

Diff file one from another

join -v 1 file1 file2 > file3

repair mongodb

down vote

Step 1: Remove lock file. sudo rm /data/db/mongod.lock

Step 2: Repair mongodb. sudo mongod --repair

Step 3: start mongodb. sudo start mongodb or sudo service mongodb start

Step 4: Check status of mongodb. sudo status mongodb or
sudo service mongodb status

Step 5: Start mongo console. mongo