bash - 使用两列比较三个文件并使用 awk/sed 在每个文件中打印唯一条目

Question

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Answer 1

awk 助您一臂之力!

$ awk '{a[$1,$2]=(($1,$2) in a?a[$1,$2]",":$0 OFS)FILENAME}
   END{for(k in a) print a[k]}' {a,b,c}.bed

虽然结果不会按相同的顺序排列。

解释

x=c?a:b is the ternary operator, sets x to a or b based on value of c (similar to if-then-else). Here we assign the value of map for key ($1,$2) either by appending FILENAME (if already exists) or setting to the current line (again by appending FILENAME). In the END block, just iterates over this map, and prints the values.