linux - Centos 6.6 shell script -syntax error near unexpected token -


here shell script code, when used in centos 6.6, got 2 error message....

./script12.bash: line 11: syntax error near unexpected token `$1' ./script12.bash: line 11: `case $1 in'

can me find error?

#! /bin/bash num=0 until [ "$num" -eq 30 ] 　　 echo -n "please input number here : " 　　 read num  　　 if [ "$num" -gt 30 ] ; 　　　　echo "$num" big , try again. 　　　　echo 　　 elif [ "$num" -eq 30 ] ; 　　　　echo bingo !! got it. 　　 else 　　　　echo "$num" small , try again. 　　　　echo 　　 fi done

not sure how script contains strange blank characters, hex editor shows ascii code 80 characters, seem confuse bash. when replacing them normal spaces (ascii code 20), following works:

#!/bin/bash  num=0 until [ "$num" -eq 30 ]     echo -n "please input number here : "     read num      if [ "$num" -gt 30 ] ;         echo "$num" big , try again.         echo     elif [ "$num" -eq 30 ] ;         echo bingo !! got it.     else         echo "$num" small , try again.         echo     fi done

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