测试文件权限

IFS=:
for dir in $PATH
do
        echo $dir
        if [ -w dir ]; then
                echo -e "\t你有权限写$dir"
        else
                echo -e "\t你没有权限写$dir"
        fi
        if [ -o dir ]; then
                echo -e "\t你拥有$dir"
        else
                echo -e "\t你不拥有$dir"
        fi
done