添加行号

vim版

# line(.)获取当前行号
:%s/^/\=line(.)/g
# 行号与正文内容以\t分割
:%s/^\(\d\+\)/\1\t/g

sed版

用sed 给文本文件加行号

awk

awk '{print NR ","$1","$2}' old.log > new.log
awk '{print NR " "$0' old.log > new.log
awk '{print NR "\t"$1"\t"$2}' old.log > new.log