What is read command in bash?

Claudine Fadel asked a question: What is read command in bash?
Asked By: Claudine Fadel
Date created: Sat, Jul 24, 2021 6:43 PM

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Top best answers to the question «What is read command in bash»

read is a bash built-in command that reads a line from the standard input (or from the file descriptor) and split the line into words. The first word is assigned to the first name, the second one to the second name, and so on… read and echo are enclosed in parentheses and executed in the same subshell.

FAQ

Those who are looking for an answer to the question «What is read command in bash?» often ask the following questions:

💻 How does the read command in bash work?

  • Let’s break down what will happen when the above code is submitted. cat /etc/passwd will read the contents of the file and pass it as input through the pipe. read command reads each line passed as input from cat command and stores it in the LREAD variable.

💻 How to read output of a command bash?

  • To get the output of a command in an array, with one line per element, there are essentially 3 ways: With Bash≥4 use mapfile —it's the most efficient: mapfile -t my_array < < (my_command) Otherwise, a loop reading the output (slower, but safe):

💻 What do you do with the read command in bash?

  • When you use read, you are communicating to the bash terminal that you want to capture the input from the user. By default, the command will create a variable to save that input to. Now let’s see some examples of read command to understand how you can use it in different situations. 1. Read command without options

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