‘echo’ command is used with ‘-e’ option in the following script. For this, the function of backslash(\) is enabled and the output is generated by adding ‘tab’ space where ‘\t’ is used in the string. The following output will appear after running the script.
How do you echo a variable in shell script?
Now, using the echo command we can simply display its value on the terminal as follows:
- $ var_a=100. $ echo $var_a.
- $ var_b=” bash programming echo variable” $ echo $var_b.
- $ var_A=”hellofriends” $ var_B=50. $ echo $var_A$var_B.
- $ var1=$(date) $ var2=$(hostname) $ echo “the date is $var1 @ computer name is $var2”
How do I echo in terminal?
To write a simple string of text to the terminal window, type echo and the string you want it to display: echo My name is Dave. The text is repeated for us.
How do you write echo command in Linux?
\a : alert return with backspace interpretor ‘-e’ to have sound alert. This command when executed, it will produce an alert sound or Bel . 8. echo * : this command will print all files/folders, similar to ls command .
How do you echo quotes in bash?
`echo` command prints the value of this variable without any quotation. When the variable is quoted by single quote then the variable name will print as output. If the backslash ( \ ) is used before the single quote then the value of the variable will be printed with single quote.
How do I echo a file?
How to redirect the output of the command or data to end of file
- Open the terminal application.
- Append text to end of file using echo command: echo ‘text here’ >> filename.
- Append command output to end of file: command-name >> filename.
What is the use of echo command?
Echo is a Unix/Linux command tool used for displaying lines of text or string which are passed as arguments on the command line. This is one of the basic command in linux and most commonly used in shell scripts.
What is the use of echo in shell script?
The echo command is a built-in Linux feature that prints out arguments as the standard output. echo is commonly used to display text strings or command results as messages.