求大神帮忙帮忙看下这个shell脚本第三行有没有错

Question

#!/bin/bash
if [ $# -eq 0 ]
then
echo "missing arguments"
elif [ -d $1 ]
then
ls $1
elif [ -f $1 ]
then
cat $1
fi

Answer 1

#!/bin/bash

if [ $# -eq 0 ];then
echo "missing arguments"
elif [ -d $1 ];then
ls $1
elif [ -f $1 ];then
cat $1
else
echo error
fi