如何使用awk对大文件中的数字进行减法

Question

我有一个像这样的大文件

AT5G44030,TAACARA,1000,+,200,206
AT5G44030,TAACARA,1000,+,418,424
AT5G44030,TAACARA,1000,+,773,779
AT5G44030,NGATT,1000,+,114,118
AT5G44030,NGATT,1000,+,267,271
....................................

我想在最后添加两列，减去 5th - 3rd ， 6th - 3rd ，所以最终文件应该如下所示。

AT5G44030,TAACARA,1000,+,200,206,-800,-794
AT5G44030,TAACARA,1000,+,418,424,-582,-576
AT5G44030,TAACARA,1000,+,773,779,-227,-221
AT5G44030,NGATT,1000,+,114,118,-886,-882
AT5G44030,NGATT,1000,+,267,271,-733,-729

.......................................

（注意中间没有空行）

我如何使用awk或 来做到这一点sed？该文件非常大 - 1M 行。

Answer 1

awk 'BEGIN { FS=OFS="," } {print $0,$5-$3,$6-$3}' my_file