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                ## read命令 read是Bash的內建命令,主要用于從鍵盤讀取內容賦值給變量,它有以下常用參數: * -p :指定多個變量 ``` #!/bin/bash read -p “please input your name " name echo "your name is $name" exit 0 ``` * -n :計數輸入的字符 ``` #!/bin/bash read -n6 -p “please input your password(lengh must be over 6 numbers)" passwd exit 0 ``` * -s :隱藏輸入,不回顯內容到終端 ``` #!/bin/bash read -s -n6 -p “please input your password(lengh must be over 6 numbers)" passwd exit 0 ``` * -t :超時等待時間 ``` #!/bin/bash read -t 5 -p “please input your name" name if [ $? -eq 0 ];then echo "your name is $name" else echo "timeout" fi exit 0 ```
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