The value of md5sum for the same file would be different after Gziped

I got a latest dataset from the collaborator yesterday, some files were already included in the previous version. However I failed in “md5sum -c md5sum.text”, that really tossed  me greatly. When I did the further check and  I found there was not any differences between the decompressed files, so only the compression step changed the MD5!!!

An email from Ray reminded me. I found the following lines on wiki page of gzip and I could have a sweet dream tonight~

“gzip” is often also used to refer to the gzip file format, which is:

  • a 10-byte header, containing a magic number, a version number and a timestamp
  • optional extra headers, such as the original file name,
  • a body, containing a DEFLATE-compressed payload
  • an 8-byte footer, containing a CRC-32 checksum and the length of the original uncompressed data

原来总是笑别人是”王八,蜗牛”没想到自己也成了房奴—悲剧的开始1

第一次去海口, 很激动. 想着从寒冷冬季瞬间移动到温暖的夏末打心眼儿觉得开心, 即使飞机已经晚了半个多小时, 我一点也不埋怨航空公司反而主动安慰自己, 恩好东西哪能那么容易就到手~

哥哥嫂嫂终于在凌晨等到了兴奋的我, 本地的热心司机在海文高速上不停的给我们介绍海南的各种有意思的风俗, 到了住处看到N大的招商银行招牌, 我心里还想, 恩, 连招行都在海南这么大派头了果断投资靠谱.

第二天一大早, 仔细看看, 又觉得有点失望, 怎么看怎么觉得土…憋心里,不敢说 还是去看房先. 坐了一摇三晃的公交车,穿越比较繁华的中心, 吃了超级难吃的早点, 我实在忍不住了, 对坐在旁边的舅妈说”哎呀, 海口说起来是个省会城市咋连个湖北二线城市都不如…” 舅妈瞪了我一眼 “要都跟一线城市一样, 就你这小样还想给爸爸妈妈买房么?” 咩, 闭嘴, 看房.

其实定金早交过了, 我们装作还没买房的外地人, 走到自己定的房子慢慢问各种的信息. 售楼小姐很是傲慢”您不用看了, 这早卖出去了, 人家钱都交了” 我囧, 于是只好说出真相, 售楼小姐更是生气觉得没卖出房子还废话了半天,打了电话给她同事”xxx, 你业主来了,在看房, 你赶快过来.”

海口

除了贵, 很贵,非常贵. 对房子其他还都很满意, 精装, 4/5有电梯, 可以装太阳能, 屋里能看海景楼下就是沿海大道不是靠路边, 隔壁1000亩的公园, 海滨浴场, 沙滩, 小区景观十分到位… 老人住, 就是图个安逸舒适,空气好, 10分钟内可以到省人民医院, 隔2条马路就是全省最好的大学, 5分钟内步行到菜场, 养个狗狗还能去超级大公园散步… 算啦, 其他再有缺点我也认了.

只是这钱…这钱…这钱… 这时候的我还傻傻的觉得借钱没什么.