bash 嵌套的 awk 命令
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Nested awk command
提问by jmlemetayer
I have a file with this syntax:
我有一个具有以下语法的文件：
foo:bar:value1,value2,value3,...:foo:bar
I want to get the value list (space separated) which does not have a fixed length:
我想获取没有固定长度的值列表（空格分隔）：
value1 value2 value3 ...
Is there a way to do this in a single awk command ? Instead of piping commands like that:
有没有办法在单个 awk 命令中做到这一点？而不是像这样的管道命令：
awk -F: '{print }' myfile.txt | awk -F, '{OFS=" "; = ; print awk -F: '{gsub(/,/," ",);print }' file
}'
回答by jaypal singh
If you know which field to grab the csv separated values, then you can use gsubfunction too:
如果您知道要获取 csv 分隔值的字段，那么您也可以使用gsub函数：
$ cat file
foo:bar:value1,value2,value3,value3:foo:bar
foo:bar:value1,value2:foo:bar
foo:bar:value1,value2,value3,value4,value5,value6:foo:bar
$ awk -F: '{gsub(/,/," ",);print }' file
value1 value2 value3 value3
value1 value2
value1 value2 value3 value4 value5 value6
awk -F : '{ split(, a, ","); print a[1], a[2], a[3] }' file
回答by tripleee
You can use Awk's split()function to do additional splitting.
您可以使用 awk 的split()函数进行额外的拆分。
