bash;gutter:true;
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"
}</p>
<p>echo $(check "xx")</p>
<p>输出: string
Original: https://www.cnblogs.com/freespider/p/13441347.html
Author: FreeSpider
Title: shell 获取变量是什么数据类型
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