我有一个如下格式的文本文件。第一行是“KEY”，第二行是“VALUE”。
KEY 4048:1736 string
3
KEY 0:1772 string
1
KEY 4192:1349 string
1
KEY 7329:2407 string
2
KEY 0:1774 string
1
我需要这个值和键在同一行。所以输出应该是这样的…
KEY 4048:1736 string 3
KEY 0:1772 string 1
KEY 4192:1349 string 1
KEY 7329:2407 string 2
KEY 0:1774 string 1
如果我可以使用一些分隔符，如$或:
KEY 4048:1736 string , 3
我如何将两条线合并成一条?
当前回答
cat input.txt
KEY 4048:1736 string
3
KEY 0:1772 string
1
KEY 4192:1349 string
1
KEY 7329:2407 string
2
KEY 0:1774 string
1
paste -sd ' \n' input.txt
KEY 4048:1736 string 3
KEY 0:1772 string 1
KEY 4192:1349 string 1
KEY 7329:2407 string 2
KEY 0:1774 string 1
paste -sd ' \n' input.txt | rev | sed 's/ / , /' | rev
KEY 4048:1736 string , 3
KEY 0:1772 string , 1
KEY 4192:1349 string , 1
KEY 7329:2407 string , 2
KEY 0:1774 string , 1
其他回答
杀死一只狗的方法不止绞刑。[1]
awk '{key=$0; getline; print key ", " $0;}'
在引号内放入您喜欢的任何分隔符。
引用:
原本是“Plenty of ways to skin the cat”，后来变成了一个古老的、可能起源于宠物的表达，也和宠物无关。
粘贴很适合这个工作:
paste -d " " - - < filename
虽然前面的解决方案似乎可以工作，但如果文档中出现一个异常，输出就会支离破碎。下面稍微安全一点。
sed -n '/KEY/{
N
s/\n/ /p
}' somefile.txt
下面是另一种使用awk的方法:
awk 'ORS=NR%2?FS:RS' file
$ cat file KEY 4048:1736 string 3 KEY 0:1772 string 1 KEY 4192:1349 string 1 KEY 7329:2407 string 2 KEY 0:1774 string 1 $ awk 'ORS=NR%2?FS:RS' file KEY 4048:1736 string 3 KEY 0:1772 string 1 KEY 4192:1349 string 1 KEY 7329:2407 string 2 KEY 0:1774 string 1 As indicated by Ed Morton in the comments, it is better to add braces for safety and parens for portability. awk '{ ORS = (NR%2 ? FS : RS) } 1' file ORS stands for Output Record Separator. What we are doing here is testing a condition using the NR which stores the line number. If the modulo of NR is a true value (>0) then we set the Output Field Separator to the value of FS (Field Separator) which by default is space, else we assign the value of RS (Record Separator) which is newline. If you wish to add , as the separator then use the following: awk '{ ORS = (NR%2 ? "," : RS) } 1' file
cat input.txt
KEY 4048:1736 string
3
KEY 0:1772 string
1
KEY 4192:1349 string
1
KEY 7329:2407 string
2
KEY 0:1774 string
1
paste -sd ' \n' input.txt
KEY 4048:1736 string 3
KEY 0:1772 string 1
KEY 4192:1349 string 1
KEY 7329:2407 string 2
KEY 0:1774 string 1
paste -sd ' \n' input.txt | rev | sed 's/ / , /' | rev
KEY 4048:1736 string , 3
KEY 0:1772 string , 1
KEY 4192:1349 string , 1
KEY 7329:2407 string , 2
KEY 0:1774 string , 1
