linux of common operations, supplement basic commands

table of Contents

read

read read console input

read (选项) (参数) 

选项:
  -p:指定读取值时的提示符;
  -t:指定读取值时等待的时间(秒)。

参数
  变量:指定读取值的变量名

free

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Origin www.cnblogs.com/mylk0606/p/11811820.html