pawk

1cpuer

# echo -e "#1qa \n123\n456123" | awk 'a=length($0){for(i=1;i<=a;i++)printf "#";print $0}$0=$0{print gensub(/##*/,"www&","g")}'
######1qa
www#1qa
###123
123
######456123
456123

想替换 1 3 5 行，多了 2 4 6 行
#,; PWD=/mnt/i/je-d/sou-d
10869  # 2019-01-22 13:05:07 1548133507 # echo -e "#1qa \n123\n456123" | awk 'a=length($0){for(i=1;i<=a;i++)printf "#";print $0}'
######1qa
###123
######456123

klainogn

1. echo -e "#1qa \n123\n456123" | awk 'NR%2==1{a=length($0);for(i=1;i<=a;i++)$0="#"$0;print gensub(/##*/,"www&","g")}'
   
2. www######1qa
   
3. www######456123

复制代码