[email protected] refers to all of a shell script's command-line arguments.
The read statement accepts input from the keyboard. First, open any text editor; for this tutorial, I am using the Vim text editor due to its many useful features. read [options] variable_name Now let's see some examples of read command to understand how you can use it in different situations.
cat command.
Numbering of array elements starts at zero.
read is a command found on Unix and Unix-like operating systems such as Linux.
This guide explains how the Bash read command works through various examples and use cases.
The read command is used to get a line of input into a variable.
It is an easy tool to take user input when creating a bash script.
The backslash character ( \) may be used to remove any special meaning for the next character read and for line continuation.
Description Syntax Examples Related commands Bash builtins help Linux commands help Description
It reads a line of input from standard input or a file passed as an argument to its -u flag, and assigns it to a variable. In read command, we are able to read in the user inputs. For .
By default, the command will create a variable to save that input to. The backslash is considered to be part of the line. Read Command arguments Read command provides a lot of arguments that can be passed to it so as to get the user input in a flexible way.
We can combine the prompts into the read commands using the -p (prompt) option.
Example 1: Using the "read" Command in a Bash Script. The script prints the numbers to the terminal window, adds them together, and prints the total../script8.sh. Probably because the read command is trying to set my input to the variables device1 and ; . Since it is a built-in command, as long as we have Bash available there is no need for additional setup steps.
Bash read builtin command help You should read that statement in two parts, the first one clears the value of the IFS variable, i.e. Using the "read" command means that you are interacting with Bash to obtain information from the user.
Prerequisites Access to the command line/terminal. Store the words in an indexed array named array.
What is the use of read command in Unix? 2.
When you use read, you are communicating to the bash terminal that you want to capture the input from the user. 1,831 1 1 gold badge 17 17 silver badges 31 31 bronze badges. It reads a line of input from standard input or a file passed as an argument to its -u flag, and assigns it to a variable. The principal way to do this is via the read command. 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.
-d delim. It depends. Letting users decide what files to process is more flexible and more consistent with built-in Unix commands. This command saves the received data in a file called "logfile.txt.".
Read command without options.
But on success, it returns the number of bytes read. -e.
In other words, the read command is mostly used in the bash environment. Improve this question.
You will be able to better understand this concept with an example. Contents 1 Make variable readonly 2 Make function readonly 3 Display all readonly variables 4 Display all readonly functions 5 See also Make variable readonly
Retrieved from "https: . read [-ers] [-a aname] [-d delim] [-i text] [-n nchars] [-N nchars] [-p prompt] [-t timeout] [-u fd] [name.]-r.
In Unix shells, like Bash, it is present as a shell built in function, and not as a separate executable .
su.
Therefore, we do not need to install any additional tools. Bash Scripting: Read input from command line Let's start with a simple example to see how the read command is used to prompt the user for input on the command line. In case you need a newline in any part of the string but the end, you can use \n, for example. is equivalent to the more readable IFS="", the second one is reading the line variable from stdin, read -r line. less command.
Use the -n option and provide a number to set the character limit. Backslash does not act as an escape character. [email protected] refers to all of a shell script's command-line arguments. We can make a Bash script interactive by prompting a user for input. The read command is a built in function that allows scripts to catch information entered by users interactively.
About Linux Bash Shell Scripting Tutorial Wiki; Disclaimers;
There is no stand-alone read command: instead, it is a shell built-in, and as such is documented in the man page for bash:.
In this article we will take an in-depth look at the read command, it's options and show you some examples of it's usage. Basic Syntax of while read line.
To install Vim, execute the following command in the terminal: 1. If the number or count is zero then this command may detect the errors.
The system will capture input until you hit enter again. Sed Command in Linux/Unix with examples; AWK command in Unix/Linux with examples; grep command in Unix/Linux; cut command in Linux with examples; . In particular, a backslash-newline pair may not be used as . This is a built-in command for Linux systems. 2.
The tail command displays, by default, the last 10 lines of a text file in Linux.This command can be very useful when examining recent activity in log files.In the picture above you can see that the last 10 lines of the /var/log/messages file were displayed. The Bash read command is a powerful built-in utility used for word segmentation of strings under Linux.
Method 3: Using here Strings. If the number or count is zero then this command may detect the errors. Zero indicates the end of the file. Share.
They are read from the keyboard and stored in two variables, user_number1 and user_number2.
It reads a line of text from standard input and splits it into words.
#!/bin/bash echo "What is your name?" read name echo "Enjoy this tutorial, $name" The read command on line 5 will pause the script and wait for some input from the user. Read command - Linux Bash Shell Scripting Tutorial Wiki Read command Use the read command if you want to receive input while running a script. You need to follow a specified syntax to read a file line by line.
What is read?
The script outputs the file's contents line by line in standard output. Bash ships with a number of built-in commands that you can use on the command line or in your shell scripts. The general syntax of the read built-in takes the following form: read [options] [name.] In Unix shells, like Bash, it is present as a shell built in function, and not as a separate executable . The basic syntax of the "read" command is as follows: read [options] VAR1 VAR2 .. VARN. They are read from the keyboard and stored in two variables, user_number1 and user_number2. The Bash shell has another built-in command: read, it reads a line of text from the standard input and splits it into words.
1 Trying to use the "read command" to accept user input from the command prompt itself but my script doesnt seem to be moving forward echo "Do you want to continue?
Syntax: If -d is not used, the default line delimiter is a newline.
In this article, we'll explore the built-in read command.. Bash read Built-in #. It provides a lot of options and arguments along with it for more flexible usage, but we'll cover them in the next few sections.
We can solve the problem using the read command: IFS=$ '\n' read -r -d '' -a my_array < < ( COMMAND && printf '\0' ) Let's test it and see if it will work on different cases:
Any ideas on how to fix it?
It saves the value in a variable, but with no " $ " sign.
The command-line arguments that are passed to a bash script are called positional parameters because how these arguments are referenced inside a script depends on the position of the arguments in the command line. There is however, a lot more to the read command.
Category: Commands
Method One: Read Command-Line Argument by Their Positions. This can be done from the command line, with our script waiting for user input in order to proceed further. Both the su and the sudo commands allow users to perform system administration tasks that are not permitted for non-privileged usersthat is, everyone but the root user.
nc -l -p 6566 > logfile.txt.
What is the use of read command in Unix?
This article will help you to read a line from a file using the while loop in Bash.
The script prints the numbers to the terminal window, adds them together, and prints the total../script8.sh. On Unix-like operating systems, read is a builtin command of the Bash shell. Now let's see some examples of read command to understand how you can use it in different situations. To capture the data from the client in a file, we can send the output from nc to a file using redirection.
Some people prefer the sudo command: For example, Seth Kenlon recently published "5 reasons to use sudo on Linux", in which he extols its many virtues. you cannot change the value of variables. The first word is assigned to the first name, the second one to the second name, and so on.
Readonly command - Linux Bash Shell Scripting Tutorial Wiki Readonly command Use the readonly command to make variables and functions readonly i.e.
read is a command found on Unix and Unix-like operating systems such as Linux.
but, if you pass -r, then Backslash does not act as an escape character. The first word is assigned to the first name, the second one to the . The Bash read command is a built-in utility that reads text from standard input. Zero indicates the end of the file. bash filename runs the commands saved in a file. whereis -1. linux bash shell command sh. In this article we will take an in-depth look at the read command, it's options and show you some examples of it's usage. You can assign that input to a variable to be used for processing.
The following syntax is used for bash shell to read a file using while loop: It is primarily used for catching user input but can be used to implement functions taking input from standard input. See how to use read command to get input via keyboard.
Use the read command if you want to receive input while running a script.
The Bash read command is a powerful built-in utility used for word segmentation of strings under Linux. The read builtin command takes the following options: -a array. Below are the examples of Linux Read: #1.
The basic syntax of the "read" command is as follows: read [options] VAR1 VAR2 .. VARN.
It allows for word splitting that is tied to the special shell variable IFS. The tool offers many functionalities for reading user input, helping make Bash scripts interactive. Read is a bash builtin command that reads the contents of a line into a variable. Likewise, how do you read a file in Linux?
7.
The Bash man page's section about read states that, by default.
More specifically, the command-line arguments are referenced by digits .
The read command offers two options when limiting the number of characters for the user input: 1.
It is primarily used for catching user input but can be used to implement functions taking input from standard input. Set Character Limit. You can assign that input to a variable to be used for processing.
There is however, a lot more to the read command.
Example 1: Using the "read" Command in a Bash Script
Another method of printing a file's contents line by line is to use a here string to feed the file's contents to the read command.
In the Linux ecosystem, the read command is used to read from the file descriptor. which both will produce the following output: Please Enter a Message: _. where _ is the cursor. Bash Read Command Examples Receiving input from the read command. Bash Read Command Examples Receiving input from the read command. So, running a bash script to process a text file is much different.
What is specific in this syntax is the IFS affectation is transcient and only valid for the read command.
bash filename runs the commands saved in a file. To find the directories that the whereis command searches for, use the -1 option. 1. Although it is also possible to read input in the form of command line arguments that are passed to the Bash script when it is executed.
See how to use read command to get input via keyboard. Read is a bash builtin command that reads the contents of a line into a variable.
It is a powerful utility and as important as echo command and positional parameter. Read Command. The read command modifies each line read; by default it removes all leading and trailing whitespace characters (spaces and tabs, or any whitespace characters present in IFS). read command in Linux system is used to read from a file descriptor. more command.
$1 , $2 , etc., refer to the first command-line argument, the second command-line argument, etc. sudo.
The Linux read command is a bash builtin that is typically used to accept user input in a shell script. These words can then be used as the input for other commands. In bash, the read command is used for the word segmentation of the string under the Linux environment. The same input we can pass to different commands or jobs.
The script prompts for two numbers. $1 , $2 , etc., refer to the first command-line argument, the second command-line argument, etc.
This character signals the end of the line. The read statement accepts input from the keyboard.
Basic Syntax Let's explore the basic syntax including all optional parameters: $ read [options] [name.] 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 here string connects the contents of a variable, string, or file specified after the <<< syntax to the standard input of the invoked program. The read command is a built in function that allows scripts to catch information entered by users interactively. We can combine the prompts into the read commands using the -p (prompt) option. Letting users decide what files to process is more flexible and more consistent with built-in Unix commands. The read command is used to get a line of input into a variable. Press Enter after one character to end the command before reaching the character limit.
To print 4th line from the file then we will run following commands. So, in the next instance, the different commands or the jobs can perform the execution operation with the read command as in input. Method One: Read Command-Line Argument by Their Positions The command-line arguments that are passed to a bash script are called positional parameters because how these arguments are referenced inside a script depends on the position of the arguments in the command line.
Read command without options Linux And Unix Command To View File. But on success, it returns the number of bytes read.
Note: To access the read command value, we .
In this tutorial, we'll take a look at how to do this with the read command.
We can simply get user input from the read command in BASH. By default, whereis looks for the command's files in the environment variables hard-coded paths and directories.
Another option that you will find handy is the -f option. To examine the "read" command more in-depth, we will create a simple script that will ask for the user's name. You won't see any outputit is going into the fileand, paradoxically, you won't know if a connection has occurred until nc .
If that is not desired, the IFS variable can be cleared with IFS= Some of the few arguments are discussed here: Prompt String (-p) Password Input (-s) Changing the Delimiter (IFS) Parsing to the array (-a) Limiting Length of the Input (-n) Timed Input (-t) Prompt String (yes/no)" read -p $1 if [ "$1" == "yes" ] then sleep 5s echo "" echo " move ahead" else echo "" echo "Skipping The Step.." echo "" sleep 5s fi I want to execute the script like this..
read [options] variable_name.
The read command is a built-in utility available in the Linux ecosystem. The script prompts for two numbers. Since it is a built-in command, as long as we have Bash available there is no need for additional setup steps. gnome-open command or xdg-open command (generic version) or kde-open command (kde version) - Linux gnome/kde desktop command to open any file.
Set the delimiter character to delim. Basic Syntax. It allows for word splitting that is tied to the special shell variable IFS. Whereis searches the binary, source, and manual files for the command specified as an argument when used without any options.
Basically, this command read up the total number of bytes from the specified file descriptor into the buffer.
read command in Linux system is used to read from a file descriptor.
Follow edited Jan 30, 2015 at 21:29. snollygolly.
The backslash is considered to be part of the line.
read -p "$ (echo -e 'Please Enter a Message: \n\b')" message read -p "`echo -e 'Please Enter a Message: \n\b'`" message. For example: read -n 3.
Basically, this command read up the total number of bytes from the specified file descriptor into the buffer. The Linux read command is used to read the contents of a line into a variable. The Linux read command is a bash builtin that is typically used to accept user input in a shell script. When you type read without any additional options, you will need to hit enter to start the capture.
The read statement accepts input from the keyboard. First, open any text editor; for this tutorial, I am using the Vim text editor due to its many useful features. read [options] variable_name Now let's see some examples of read command to understand how you can use it in different situations.
cat command.
Numbering of array elements starts at zero.
read is a command found on Unix and Unix-like operating systems such as Linux.
This guide explains how the Bash read command works through various examples and use cases.
The read command is used to get a line of input into a variable.
It is an easy tool to take user input when creating a bash script.
The backslash character ( \) may be used to remove any special meaning for the next character read and for line continuation.
Description Syntax Examples Related commands Bash builtins help Linux commands help Description
It reads a line of input from standard input or a file passed as an argument to its -u flag, and assigns it to a variable. In read command, we are able to read in the user inputs. For .
By default, the command will create a variable to save that input to. The backslash is considered to be part of the line. Read Command arguments Read command provides a lot of arguments that can be passed to it so as to get the user input in a flexible way.
We can combine the prompts into the read commands using the -p (prompt) option.
Example 1: Using the "read" Command in a Bash Script. The script prints the numbers to the terminal window, adds them together, and prints the total../script8.sh. Probably because the read command is trying to set my input to the variables device1 and ; . Since it is a built-in command, as long as we have Bash available there is no need for additional setup steps.
Bash read builtin command help You should read that statement in two parts, the first one clears the value of the IFS variable, i.e. Using the "read" command means that you are interacting with Bash to obtain information from the user.
Prerequisites Access to the command line/terminal. Store the words in an indexed array named array.
What is the use of read command in Unix? 2.
When you use read, you are communicating to the bash terminal that you want to capture the input from the user. 1,831 1 1 gold badge 17 17 silver badges 31 31 bronze badges. It reads a line of input from standard input or a file passed as an argument to its -u flag, and assigns it to a variable. The principal way to do this is via the read command. 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.
-d delim. It depends. Letting users decide what files to process is more flexible and more consistent with built-in Unix commands. This command saves the received data in a file called "logfile.txt.".
Read command without options.
But on success, it returns the number of bytes read. -e.
In other words, the read command is mostly used in the bash environment. Improve this question.
You will be able to better understand this concept with an example. Contents 1 Make variable readonly 2 Make function readonly 3 Display all readonly variables 4 Display all readonly functions 5 See also Make variable readonly
Retrieved from "https: . read [-ers] [-a aname] [-d delim] [-i text] [-n nchars] [-N nchars] [-p prompt] [-t timeout] [-u fd] [name.]-r.
In Unix shells, like Bash, it is present as a shell built in function, and not as a separate executable .
su.
Therefore, we do not need to install any additional tools. Bash Scripting: Read input from command line Let's start with a simple example to see how the read command is used to prompt the user for input on the command line. In case you need a newline in any part of the string but the end, you can use \n, for example. is equivalent to the more readable IFS="", the second one is reading the line variable from stdin, read -r line. less command.
Use the -n option and provide a number to set the character limit. Backslash does not act as an escape character. [email protected] refers to all of a shell script's command-line arguments. We can make a Bash script interactive by prompting a user for input. The read command is a built in function that allows scripts to catch information entered by users interactively.
About Linux Bash Shell Scripting Tutorial Wiki; Disclaimers;
There is no stand-alone read command: instead, it is a shell built-in, and as such is documented in the man page for bash:.
In this article we will take an in-depth look at the read command, it's options and show you some examples of it's usage. Basic Syntax of while read line.
To install Vim, execute the following command in the terminal: 1. If the number or count is zero then this command may detect the errors.
The system will capture input until you hit enter again. Sed Command in Linux/Unix with examples; AWK command in Unix/Linux with examples; grep command in Unix/Linux; cut command in Linux with examples; . In particular, a backslash-newline pair may not be used as . This is a built-in command for Linux systems. 2.
The tail command displays, by default, the last 10 lines of a text file in Linux.This command can be very useful when examining recent activity in log files.In the picture above you can see that the last 10 lines of the /var/log/messages file were displayed. The Bash read command is a powerful built-in utility used for word segmentation of strings under Linux.
Method 3: Using here Strings. If the number or count is zero then this command may detect the errors. Zero indicates the end of the file. Share.
They are read from the keyboard and stored in two variables, user_number1 and user_number2.
It reads a line of text from standard input and splits it into words.
#!/bin/bash echo "What is your name?" read name echo "Enjoy this tutorial, $name" The read command on line 5 will pause the script and wait for some input from the user. Read command - Linux Bash Shell Scripting Tutorial Wiki Read command Use the read command if you want to receive input while running a script. You need to follow a specified syntax to read a file line by line.
What is read?
The script outputs the file's contents line by line in standard output. Bash ships with a number of built-in commands that you can use on the command line or in your shell scripts. The general syntax of the read built-in takes the following form: read [options] [name.] In Unix shells, like Bash, it is present as a shell built in function, and not as a separate executable . The basic syntax of the "read" command is as follows: read [options] VAR1 VAR2 .. VARN. They are read from the keyboard and stored in two variables, user_number1 and user_number2. The Bash shell has another built-in command: read, it reads a line of text from the standard input and splits it into words.
1 Trying to use the "read command" to accept user input from the command prompt itself but my script doesnt seem to be moving forward echo "Do you want to continue?
Syntax: If -d is not used, the default line delimiter is a newline.
In this article, we'll explore the built-in read command.. Bash read Built-in #. It provides a lot of options and arguments along with it for more flexible usage, but we'll cover them in the next few sections.
We can solve the problem using the read command: IFS=$ '\n' read -r -d '' -a my_array < < ( COMMAND && printf '\0' ) Let's test it and see if it will work on different cases:
Any ideas on how to fix it?
It saves the value in a variable, but with no " $ " sign.
The command-line arguments that are passed to a bash script are called positional parameters because how these arguments are referenced inside a script depends on the position of the arguments in the command line. There is however, a lot more to the read command.
Category: Commands
Method One: Read Command-Line Argument by Their Positions. This can be done from the command line, with our script waiting for user input in order to proceed further. Both the su and the sudo commands allow users to perform system administration tasks that are not permitted for non-privileged usersthat is, everyone but the root user.
nc -l -p 6566 > logfile.txt.
What is the use of read command in Unix?
This article will help you to read a line from a file using the while loop in Bash.
The script prints the numbers to the terminal window, adds them together, and prints the total../script8.sh. On Unix-like operating systems, read is a builtin command of the Bash shell. Now let's see some examples of read command to understand how you can use it in different situations. To capture the data from the client in a file, we can send the output from nc to a file using redirection.
Some people prefer the sudo command: For example, Seth Kenlon recently published "5 reasons to use sudo on Linux", in which he extols its many virtues. you cannot change the value of variables. The first word is assigned to the first name, the second one to the second name, and so on.
Readonly command - Linux Bash Shell Scripting Tutorial Wiki Readonly command Use the readonly command to make variables and functions readonly i.e.
read is a command found on Unix and Unix-like operating systems such as Linux.
but, if you pass -r, then Backslash does not act as an escape character. The first word is assigned to the first name, the second one to the . The Bash read command is a built-in utility that reads text from standard input. Zero indicates the end of the file. bash filename runs the commands saved in a file. whereis -1. linux bash shell command sh. In this article we will take an in-depth look at the read command, it's options and show you some examples of it's usage. You can assign that input to a variable to be used for processing.
The following syntax is used for bash shell to read a file using while loop: It is primarily used for catching user input but can be used to implement functions taking input from standard input. See how to use read command to get input via keyboard.
Use the read command if you want to receive input while running a script.
The Bash read command is a powerful built-in utility used for word segmentation of strings under Linux. The read builtin command takes the following options: -a array. Below are the examples of Linux Read: #1.
The basic syntax of the "read" command is as follows: read [options] VAR1 VAR2 .. VARN.
It allows for word splitting that is tied to the special shell variable IFS. The tool offers many functionalities for reading user input, helping make Bash scripts interactive. Read is a bash builtin command that reads the contents of a line into a variable. Likewise, how do you read a file in Linux?
7.
The Bash man page's section about read states that, by default.
More specifically, the command-line arguments are referenced by digits .
The read command offers two options when limiting the number of characters for the user input: 1.
It is primarily used for catching user input but can be used to implement functions taking input from standard input. Set Character Limit. You can assign that input to a variable to be used for processing.
There is however, a lot more to the read command.
Example 1: Using the "read" Command in a Bash Script
Another method of printing a file's contents line by line is to use a here string to feed the file's contents to the read command.
In the Linux ecosystem, the read command is used to read from the file descriptor. which both will produce the following output: Please Enter a Message: _. where _ is the cursor. Bash Read Command Examples Receiving input from the read command. Bash Read Command Examples Receiving input from the read command. So, running a bash script to process a text file is much different.
What is specific in this syntax is the IFS affectation is transcient and only valid for the read command.
bash filename runs the commands saved in a file. To find the directories that the whereis command searches for, use the -1 option. 1. Although it is also possible to read input in the form of command line arguments that are passed to the Bash script when it is executed.
See how to use read command to get input via keyboard. Read is a bash builtin command that reads the contents of a line into a variable.
It is a powerful utility and as important as echo command and positional parameter. Read Command. The read command modifies each line read; by default it removes all leading and trailing whitespace characters (spaces and tabs, or any whitespace characters present in IFS). read command in Linux system is used to read from a file descriptor. more command.
$1 , $2 , etc., refer to the first command-line argument, the second command-line argument, etc. sudo.
The Linux read command is a bash builtin that is typically used to accept user input in a shell script. These words can then be used as the input for other commands. In bash, the read command is used for the word segmentation of the string under the Linux environment. The same input we can pass to different commands or jobs.
The script prompts for two numbers. $1 , $2 , etc., refer to the first command-line argument, the second command-line argument, etc.
This character signals the end of the line. The read statement accepts input from the keyboard.
Basic Syntax Let's explore the basic syntax including all optional parameters: $ read [options] [name.] 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 here string connects the contents of a variable, string, or file specified after the <<< syntax to the standard input of the invoked program. The read command is a built in function that allows scripts to catch information entered by users interactively. We can combine the prompts into the read commands using the -p (prompt) option. Letting users decide what files to process is more flexible and more consistent with built-in Unix commands. The read command is used to get a line of input into a variable. Press Enter after one character to end the command before reaching the character limit.
To print 4th line from the file then we will run following commands. So, in the next instance, the different commands or the jobs can perform the execution operation with the read command as in input. Method One: Read Command-Line Argument by Their Positions The command-line arguments that are passed to a bash script are called positional parameters because how these arguments are referenced inside a script depends on the position of the arguments in the command line.
Read command without options Linux And Unix Command To View File. But on success, it returns the number of bytes read.
Note: To access the read command value, we .
In this tutorial, we'll take a look at how to do this with the read command.
We can simply get user input from the read command in BASH. By default, whereis looks for the command's files in the environment variables hard-coded paths and directories.
Another option that you will find handy is the -f option. To examine the "read" command more in-depth, we will create a simple script that will ask for the user's name. You won't see any outputit is going into the fileand, paradoxically, you won't know if a connection has occurred until nc .
If that is not desired, the IFS variable can be cleared with IFS= Some of the few arguments are discussed here: Prompt String (-p) Password Input (-s) Changing the Delimiter (IFS) Parsing to the array (-a) Limiting Length of the Input (-n) Timed Input (-t) Prompt String (yes/no)" read -p $1 if [ "$1" == "yes" ] then sleep 5s echo "" echo " move ahead" else echo "" echo "Skipping The Step.." echo "" sleep 5s fi I want to execute the script like this..
read [options] variable_name.
The read command is a built-in utility available in the Linux ecosystem. The script prompts for two numbers. Since it is a built-in command, as long as we have Bash available there is no need for additional setup steps. gnome-open command or xdg-open command (generic version) or kde-open command (kde version) - Linux gnome/kde desktop command to open any file.
Set the delimiter character to delim. Basic Syntax. It allows for word splitting that is tied to the special shell variable IFS. Whereis searches the binary, source, and manual files for the command specified as an argument when used without any options.
Basically, this command read up the total number of bytes from the specified file descriptor into the buffer.
read command in Linux system is used to read from a file descriptor.
Follow edited Jan 30, 2015 at 21:29. snollygolly.
The backslash is considered to be part of the line.
read -p "$ (echo -e 'Please Enter a Message: \n\b')" message read -p "`echo -e 'Please Enter a Message: \n\b'`" message. For example: read -n 3.
Basically, this command read up the total number of bytes from the specified file descriptor into the buffer. The Linux read command is used to read the contents of a line into a variable. The Linux read command is a bash builtin that is typically used to accept user input in a shell script. When you type read without any additional options, you will need to hit enter to start the capture.