为什么用空格而不是\ t的uniq -c输出? [英] Why uniq -c output with space instead of \t?

问题描述

我使用uniq -c一些文本文件. 其输出如下:

I use uniq -c some text file. Its output like this:

123(space)first word(tab)other things
  2(space)second word(tab)other things

....

所以我需要提取总数(如上面的123和2)，但是我不知道如何去做，因为如果我按空格分割此行，它将喜欢这个['123', 'first', 'word(tab)other', 'things']. 我想知道为什么不使用tab输出?

So I need extract total number(like 123 and 2 above), but I can't figure out how to, because if I split this line by space, it will like this ['123', 'first', 'word(tab)other', 'things']. I want to know why doesn't it output with tab?

以及如何在shell中提取总数? (我终于用python，WTF提取了它)

And how to extract total number in shell? ( I finally extract it with python, WTF)

更新:抱歉，我没有正确描述我的问题.我不想对总数求和，我只想用(tab)替换(space)，但它不会影响文字空间，因为我仍然需要后面的数据.就是这样:

Update: Sorry, I didn't describe my question correctly. I didn't want to sum the total number, I just want to replace (space) with (tab), but it doesn't effect the space in words, because I still need the data after. Just like this:

123(tab)first word(tab)other things
  2(tab)second word(tab)other things

推荐答案

尝试一下:

uniq -c | sed -r 's/^( *[^ ]+) +/\1\t/'

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