没有太多说的，直接上代码：

[root@linux-me HI-FI]# for i in `seq 1 10`; do final_str=$i; if [ $i -lt 10 ]; then final_str=0$i; fi;  echo "Final String:: $final_str";  done
Final String:: 01
Final String:: 02
Final String:: 03
Final String:: 04
Final String:: 05
Final String:: 06
Final String:: 07
Final String:: 08
Final String:: 09
Final String:: 10
[root@linux-me HI-FI]#

————————————————
Done。