seq如何一次将数字打印2次？

ywlscpl

seq 1 3| awk -v ORS=" " '{print $1","$1}'

LGMENG

seq -s" " 1 3|sed 's/[^ ]*/&,&/g'

frostmounre

seq 1 10 |awk 'BEGIN{OFS=",";ORS=" "}{print $0,$0}'

你想要的？