function check(){
    local a="$1"
    printf "%d" "$a" &>/dev/null && echo "integer" && return
    printf "%d" "$(echo $a|sed 's/^[+-]\?0\+//')" &>/dev/null && echo "integer" && return
    printf "%f" "$a" &>/dev/null && echo "number" && return
    [ ${#a} -eq 1 ] && echo "char" && return
    echo "string"
}

echo $(check "xx")

输出: string

  

posted on 2020-08-05 17:28  FreeSpider  阅读(4096)  评论(0编辑  收藏  举报