输入三个数,从小到大输出:echo -n "Enter three number:"read a b cif [ $a -gt $b ];then t=$a;a=$b;b=$t;fiif [ $a -gt $c ];then t=$a;a=$c;c=$t;fiif [ $b -gt $c ];then t=$b;b=$c;c=$t;fiecho "From small to big:$a,$b,$c"