如何匹配2个文件并导出到输出？

Question

我有2个文件...

1.txt

quality@true.com:29d03982uj409382uj4e3nm432323209

2.txt

29d03982uj409382uj4e3nm432323209:false

output.txt

quality@true.com:false

Answer 1

join -t ":" -1 2 -2 1 1.txt 2.txt -o 1.1,2.2

输出：

quality@true.com:false

---

看看man join。