linux - 如何在Linux中的文件中连接具有不同模式的两行？

Question

我想将文件中已写入两行的行连接起来。例如，如下所示，我想加入第一行和第二行，分别有谚语​​和作者姓名。我想将所有类似的事件加入到一个文件中。

我可以使用 Shift+J 手动加入它们，但有将近 10000 行，这变得非常困难。

,119., 120.，是也出现在 line 中的原始源代码行号。

所以我想搜索并连接所有在行首有一个数字，然后是一个点，然后是一个空格，然后是文本的所有行.. ^[0-9]*。 (118.) 和下一行在行首没有数字。所以加入他们吧。

我到处搜索并尝试实现它但没有用。

118. People don't care how much you know until they know how much they care.
John C. Maxwell
119. A life lived in fear is a life half lived. - Proverb
120. Nothing great was ever achieved without enthusiasm.     
Ralph Waldo Emerson
121. Damn the torpedoes, full speed ahead. - David Farragut
122. Our lives begin to end the day we become silent about things that matter. - 
Martin Luther King, Jr.

Answer 1

这应该可以做到:

awk '/^[0-9]+\./ { if (last) print last; last = $0; next }
                 { print last, $0; last = "" }'

给定数据文件:

118. People don't care how much you know until they know how much they care. 
John C. Maxwell
119. A life lived in fear is a life half lived. - Proverb
120. Nothing great was ever achieved without enthusiasm. 
Ralph Waldo Emerson
121. Damn the torpedoes, full speed ahead. - David Farragut
122. Our lives begin to end the day we become silent about things that matter. - 
Martin Luther King, Jr.

产生输出:

118. People don't care how much you know until they know how much they care.  John C. Maxwell
119. A life lived in fear is a life half lived. - Proverb
120. Nothing great was ever achieved without enthusiasm.  Ralph Waldo Emerson
121. Damn the torpedoes, full speed ahead. - David Farragut
122. Our lives begin to end the day we become silent about things that matter. -  Martin Luther King, Jr.

该代码确实假设只有一个延续行。如果您可以有多个连续行，那么您需要一个更复杂的脚本。

$ cat new.data
118. People don't care how much you know until they know how much they care. 
John C. Maxwell
119. A life lived in fear is a life half lived. - Proverb
120. Nothing great was ever achieved without enthusiasm. 
Ralph Waldo Emerson
121. Damn the torpedoes, full speed ahead. - David Farragut
122. Our lives begin to end the day we become silent about things that matter. - 
Martin Luther King, Jr.
123. More than one line of data causes trouble for the basic script.
A more complex script can deal with those too. -
Jonathan Leffler
$ awk '/^[0-9]+\./ { if (last) print last; last = $0; next }
>                  { last = last " " $0 }
>      END         { if (last) print last }' new.data
118. People don't care how much you know until they know how much they care.  John C. Maxwell
119. A life lived in fear is a life half lived. - Proverb
120. Nothing great was ever achieved without enthusiasm.  Ralph Waldo Emerson
121. Damn the torpedoes, full speed ahead. - David Farragut
122. Our lives begin to end the day we become silent about things that matter. -  Martin Luther King, Jr.
123. More than one line of data causes trouble for the basic script. A more complex script can deal with those too. - Jonathan Leffler
$