cat f.txt | awk -F, ‘{$9=null;print $0}‘ | awk ‘BEGIN{OFS=",";}{print $1,$2,$3,$4,$5,$6,$7,$8,$9,$10}‘ > afterdelete.csv
2023-10-17 13:47:46
cat f.txt | awk -F, ‘{$9=null;print $0}‘ | awk ‘BEGIN{OFS=",";}{print $1,$2,$3,$4,$5,$6,$7,$8,$9,$10}‘ > afterdelete.csv