15 Examples of Linux systems about command Echo __linux

practical examples of ' echo ' command in Linux

by Avishek Kumar Under:linux Commands on:august 21, 2014 translation by Smallliu

The echo command is the most commonly used built-in command for bash shells and C shells in Linux, most typically in scripts and batch files. The effect is to display a line of text in standard output or in a file.

echo Command Examples

The syntax form of the echo command is as follows:

echo [option (s)] [string (s)]

1. Enter a line of text and display it in standard output

The output results are as follows:

2. Declare a variable and get its value through ECHO. For example, the following is declaring an X variable and assigning its value to 10.

$ x=10

Get its value through the echo command:

$ echo the value of variable x = $x 

Note: '-e ' option to treat escape characters as special

3. Use the ' \b ' option to remove the previous character from the \b

$ echo-e "Tecmint \bis \ba \bcommunity \bof" \blinux " 

4. Using the ' \ n ' option will result in new line wrapping

$ echo-e "Tecmint \nis \na \ncommunity \nof \nlinux \nnerds" 

tecmint 
is 
a 
community 
of 
Linux 

5. Using ' \ t ' will produce a tab

$ echo-e "Tecmint \tis \ta \tcommunity \tof \tlinux \tnerds" 

tecmint 	is 	a 	community 	of 	Linux 	

6. The results of the use of both \ n and T are as follows:

$ echo-e "\n\ttecmint \n\tis \n\ta \n\tcommunity \n\tof \n\tlinux \n\tnerds" 

	tecmint 
	is 
	a 
	community< C11/>of 
	Linux 
	

7. ' \v ' option, change line but the cursor still stays where it belongs

$ echo-e "\vtecmint \vis \va \vcommunity \vof \vlinux \vnerds" 

tecmint 
        is 
           a 
             community 
                       of 
                          Linux 
                                Nerds 

8. ' \ n ' and ' \v ' options will produce two line break

$ echo-e "\n\vtecmint \n\vis \n\va \n\vcommunity \n\vof \n\vlinux \n\vnerds" 


tecmint 

is 

a 

community 

of 

Linux 

9. ' \ r ' option, the text before this option is ignored.

$ ECHO-E "Tecmint \ris a community of Linux nerds" 

The ' \c ' option ignores the text after \c and does not output a newline

$ ECHO-E "Tecmint is a community \cof Linux nerds" 

One. '-n ' option to output text without output line wrapping

$ echo-n "Tecmint is a community of Linux nerds" 

12. Use the ' \a ' option to issue a warning

$ Echo-e ' Tecmint is a community of \alinux nerds ' 
Tecmint is a community of Linux nerds

13. Show All files and folders

$ echo * 

103.odt 103.pdf 104.odt 104.pdf 105.odt 105.pdf 106.odt 106.pdf 107.odt 107.pdf 108a.odt 108.odt 108.pdf 109. ODT 109.pdf 110b.odt 110.odt 110.pdf 111.odt 111.pdf 112.odt 112.pdf 113.odt linux-headers-3.16.0-customkernel_1_ Amd64.deb Linux-image-3.16.0-customkernel_1_amd64.deb Network.jpeg 

14. Display files in the specified format

$ echo *.jpeg 

network.jpeg 

15. Redirect echo Echoes to testpage files

$ echo "Test page" > Testpage 

# Check Content
avi@tecmint:~$ cat testpage 
Test page 

echo Command Options

Options	Description
-N	Do not print the trailing newline.//output does not wrap
-E	Enable interpretation of backslash escapes.//interpreting escape characters
\b	BACKSPACE//Delete previous character
\\	Backslash insert \ Character
\ n	New Line//newline character
\ r	Carriage return//cursor to First line
\ t	Horizontal tab//tab
\v	Vertical tab//NewLine cursor position unchanged

Above that is all about echo content, what questions and comments please feedback in the comment column.