服务器进程

• pstree
  • tmux
  • crontab
  • nginx
  • supervisor

rsync –rsync-path=’xxxx’ -avz file ssh-server:/path/

aws

• 安全组 ssh登录22端口没开
• ssh -vvv ssh log

bash read file

for i in `cat file.txt`
  do
    ...

数据库

• mysqldump databases a > a.sql
• mysql < a.sql
• mysqldump –all-database > all.sql