分类: code
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backcup:unbuffer implementation in python
#!/usr/bin/env python import os,sys,pty sys.stdout = os […]
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backup:window批处理随机乱序文件内容
@echo off setlocal enabledelayedexpansion set input=.\i […]
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sql备忘 :分组随机排序,并从分组中取n条数据
select * from ( select *, @group_index := CASE WHEN @pr […]
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python产生GMT格式日期时间
#缓存一天 exp = datetime.timedelta(seconds=86400) now = dat […]