The methods of using the prompt option to take an input from the user in Bash are explained in this tutorial. Different Examples of Prompt Input The different uses of the “read” command with the prompt message are shown in this part of the tutorial. Example 1: Take the String Input ...
/bin/bash# Prompt the user to enter two numbersread-p"Input the first number: "num1read-p"Input the second number: "num2# Check if the second number is zeroif["$num2"-eq0];thenecho"Error: Division by zero"else# Perform division and display the resultresult=$(echo"scale=2;$num1/...
We can customize the behavior of thereadcommand by combining it with other parameters. Some of them include-p, which allows us to obtain a prompt, and-s, which silences the input for privacy. Example: read-p"Enter username: "usernameread-sp"Enter password: "passwordechoecho"Logged in succ...
#Here we are asking a question to prompt the user for standard input. i.e.keyboard echo 'Please enter your name.' #Here we are reading the standard input and assigning it to the variable name with the read command. read name #We are now going back to standard output, by using echo ...
#Here we are asking a question to prompt the user for standard input. i.e.keyboard echo 'Please enter your name.' #Here we are reading the standard input and assigning it to the variable name with the read command. read name #We are now going back to standard output, by using echo ...
Very often in bash scrips you need toask for user inputthat requires aYes or Noanswer. For example, you may want to put a quick “Are you sure?” prompt forconfirmation before executionof some potentially dangerous part of abash script. ...
And then I use the name variable in the prompt and get user input in full_name variable. I used both ways of using the read command. Now if you give the execute permission and then run this script, you'll notice that the script displays What is your name, stranger? and then waits ...
read -p <Prompt statement> <variable_name> Bach Script Example: #!/bin/bash read -p "Please enter the name of the file: " fileName echo "The filename you entered is: $fileName" Output: There are some cases when we need to hide the user input from the screen for security and ...
-p"prompt" //提示 -ttimeout 给变量默认值 varName=${varName:-value} 如果varName不空,则返回varName的值;否则varName会使用value作为其值 使用read参数[-p]后,允许在[-p]后面跟一字符串,在字符串后面跟n个shell变量。n个shell变量用来接收从shell界面输入的字符串 ...
{version:-1}" } #@ USAGE: readline var prompt default #@ DESCRIPTION: Prompt user for string and offer default ## #@ Define correct version for your version of bash or other shell bashversion=${BASH_VERSION%%.*} if [ ${bashversion:-0} -ge 4 ] then ## bash4.x has an -i ...