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

你可以像这样使用awk来合并2对行:

awk '{ if (NR%2 != 0) line=$0; else {printf("%s %s\n", line, $0); line="";} } \
     END {if (length(line)) print line;}' flle

其他回答

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

在我需要合并两行(为了更容易处理),但允许数据超过特定的情况下,我发现这是有用的

data.txt

string1=x
string2=y
string3
string4
cat data.txt | nawk '$0 ~ /string1=/ { printf "%s ", $0; getline; printf "%s\n", $0; getline } { print }' > converted_data.txt

然后输出如下:

converted_data.txt

string1=x string2=y
string3
string4

你可以像这样使用awk来合并2对行:

awk '{ if (NR%2 != 0) line=$0; else {printf("%s %s\n", line, $0); line="";} } \
     END {if (length(line)) print line;}' flle

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

使用vim的另一种方法是:

:g/KEY/join

这将对所有包含KEY字的行应用一个连接(到它下面的行)。结果:

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