Writing to multiple files with awk

Question

I have some text files which have several columns. I'm using awk to only write the columns I want into an output file which I later analyze.

awk 'BEGIN {FS="\t"}; {print $2,FS,$3,FS,$4} input_files*.txt >> output_file.txt

Can I go one step farther and redirect the output of my awk command to more than one file depending on the value of let's say column $5? If column $5 = A, B, C and DI would end up with something like:

output_file_A.txt
output_file_B.txt
output_file_C.txt
output_file_D.txt

Thanks.

Carlos

Answer 1

你可以使用这个awk ：

awk 'BEGIN {FS="\t"}; {fn="output_file_" $5 ".txt"} {print $2,FS,$3,FS,$4 > fn} input_files*.txt

Answer 2

 awk 'BEGIN {FS="\t"}; {print $2,FS,$3,FS,$4 >> "output_file_"$5} input_files*.txt

awk的重定向与终端完全相同。