DDR爱好者之家 Design By 杰米

tr命令我们很清楚,可以删除替换,删除字符串。 在英文中我们要经常会经常统计英文中出现的频率,如果用常规的方法,用设定计算器一个个算比较费事,这个时候使用tr命令,将空格分割替换为换行符,再用tr命令删除掉有的单词后面的点号,逗号,感叹号。先看看要替换的this.txt文件

The Zen of Python, by Tim Peters
Beautiful is better than ugly.
Explicit is better than implicit.
Simple is better than complex.
Complex is better than complicated.
Flat is better than nested.
Sparse is better than dense.
Readability counts.
Special cases aren't special enough to break the rules.
Although practicality beats purity.
Errors should never pass silently.
Unless explicitly silenced.
In the face of ambiguity, refuse the temptation to guess.
There should be one-- and preferably only one --obvious way to do it.
Although that way may not be obvious at first unless you're Dutch.
Now is better than never.
Although never is often better than *right* now.
If the implementation is hard to explain, it's a bad idea.
If the implementation is easy to explain, it may be a good idea.
Namespaces are one honking great idea -- let's do more of those!

上面的文本文件,如果要文中出现次数的最多的10个单词统计出来,可以使用下面的命令

[root@linux ~]# cat this.txt | tr ' ' '\n' | tr -d '[.,!]' | sort | uniq -c | sort -nr | head -10
10 is
8 better
8 than
5 to
5 the
3 of
3 Although
3 never
3 be
3 one

可谓非常方便!

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DDR爱好者之家 Design By 杰米
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DDR爱好者之家 Design By 杰米

P70系列延期,华为新旗舰将在下月发布

3月20日消息,近期博主@数码闲聊站 透露,原定三月份发布的华为新旗舰P70系列延期发布,预计4月份上市。

而博主@定焦数码 爆料,华为的P70系列在定位上已经超过了Mate60,成为了重要的旗舰系列之一。它肩负着重返影像领域顶尖的使命。那么这次P70会带来哪些令人惊艳的创新呢?

根据目前爆料的消息来看,华为P70系列将推出三个版本,其中P70和P70 Pro采用了三角形的摄像头模组设计,而P70 Art则采用了与上一代P60 Art相似的不规则形状设计。这样的外观是否好看见仁见智,但辨识度绝对拉满。