021-the-echo-command.md

The echo command

The echo command lets you display the line of text/string that is passed as an argument

Examples:

1. To Show the line of text or string passed as an argument:

echo Hello There

2. To show all files/folders similar to the ls command:

echo *

3. To save text to a file named foo.bar:

echo "Hello There" > foo.bar

4. To append text to a file named foo.bar:

echo "Hello There" >> foo.bar

Syntax:

echo [option] [string]

It is usually used in shell scripts and batch files to output status text to the screen or a file.The -e used with it enables the interpretation of backslash escapes

Additional Options and their Functionalities:

Option	Description
\b	removes all the spaces in between the text
\c	suppress trailing new line with backspace interpretor ‘-e‘ to continue without emitting new line.
\n	creates new line from where it is used
\t	creates horizontal tab spaces
\r	carriage returns with backspace interpretor ‘-e‘ to have specified carriage return in output
\v	creates vertical tab spaces
\a	alert returns with a backspace interpretor ‘-e‘ to have sound alert
-n	omits echoing trailing newline .