GREP:
????search some process which 正在運行:
? ? ????ps -fe|grep "process_name" (fuzzy search)
????Kill process:
? ? ????kill -9 PID_num
? ??print the line and the file_name which included the "chars" in current directory:
? ????? grep chars *file_name
? ????? grep -r chars *file_name ?(include sub directory)
? ? ????grep -r chars /var/log (in special directory and its sun directory)
? ????? grep -v chars file_name (反向查找窗骑， 把不符合條件的找出來）
? ???? grep -l chars file_name (only print file_name)
how to add package in ipython:
? ? import sys
? ? sys.path ? ?(view current interpret path)
? ? sys.path.insert(0, 'package_path')
