如何在 linux 的文件中连接两行不同模式的行？

Question

我想加入一个文件中的两行。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。我想加入文件中的所有类似事件。

我可以使用 Shift+J 手动加入它们，但是有将近 10000 行，而且很难做到。

,119., 120., 是也出现在行中的原始源代码行号。

所以我想搜索并加入所有行，这些行在行首有一个数字，然后是一个点，然后是一个 space，然后是文本..^[0-9]*。 (118. ) 和下一行在行首没有数字。所以加入他们。

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

应该这样做：

awk '/^[0-9]+\./ { if (last) print last; last = [=10=]; next }
                 { print last, [=10=]; last = "" }'

给定的数据文件：

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.

该代码假定只有一个续行。如果您可以有多个续行，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 = [=13=]; next }
>                  { last = last " " [=13=] }
>      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
$

Answer 2

:%s/\n\%(\d\+\. \)\@! 应该在 vim 完成。此命令适用于多个连续行，但仅删除换行符；它不会插入空格或任何东西。

Answer 3

在 awk 中，"no empty lines and **first line** is present in file"，前导 space 也期望：

$ awk '{printf "%s%s", ( ~ /^ *\*\*/? (NR>1?ORS:"") : OFS), [=10=]} END {printf ORS}' file

.

{   # finish previous with ORS if current starts with a number and output it
    printf "%s%s", ( ~ /^ *\*\*/? (NR>1?ORS:"") : OFS), [=11=]
} 
END {printf ORS} # closing ORS

Answer 4

这可能适合您 (GNU sed)：

sed 'N;/\n[0-9]/!s/\n//;P;D' file

读取两行，如果第二行不是以数字开头，则删除换行符。

另一种方式：

sed 'N;s/\n\([^0-9]\)//;P;D' file

如何在 linux 的文件中连接两行不同模式的行？

How can I join two lines with different patterns in file in linux?

linux

unix

awk

sed

vi