Delete lines or rows in a tab-delimited file, by number of cells in that lines or rows

问题

I want to delete lines/rows which have less then or equal to 5 columns or more than 7 colunms in txt file delimited with tab. This means I want to keep lines with just 6 columns in a tab-delimited files.

I prefer to sed and awk to do this job.

回答1:

you can try

  awk -F"\t" 'NF==6' file >temp && mv temp file

回答2:

on command line :

awk '!(NF>=7 && NF<=5)' file

来源：https://stackoverflow.com/questions/5595516/delete-lines-or-rows-in-a-tab-delimited-file-by-number-of-cells-in-that-lines-o