Common read methods in Shell

Document directory

• Syntax of the read command:
• Process Input

Original article: Linux Shell scripting tutorial V2.0

Syntax of the read command:

read -p "Prompt" variable1 variable2 variableN

-P "prompt": displays the prompt information (displayed in the same line as the user input)

Variable1: the first value entered by the user is assigned to variable1.

Variable2: The second value entered by the user is assigned to variable2.

Process the input and create a file named Greet. Sh. input:

#!/bin/bashread -p "Enter your name : " nameecho "Hi, $name. Let us be friends!"

Save and close the file, and enter:

chmod +x greet.sh./greet.sh 

Output:

Enter your name : TomcatHi, Tomcat. Let us be friends!
The following is an example file used to display the domain name information entered by the user:
#!/bin/bashread -p "Enter the Internet domain name (e.g. nixcraft.com) : "domain_namewhois $domain_name
You can use the-t parameter to limit the user's input time. For example, use the following command to set the user's input parameters within 10 seconds:
#!/bin/bashread -t 10 -p "Enter the Internet domain name (e.g. nixcraft.com) : "domain_namewhois $domain_name
Enter the password and use the-S parameter to disable user input. Example:
#!/bin/bashread -s -p "Enter Password : " my_passwordechoecho "Your password - $my_password"