1th Linux Command--echo

Function: Display a piece of text on the display, generally play the role of a hint.

Syntax: Echo [-ne][string] or echo [--help][--version]

Echo will send the input string to standard output I. The output strings are separated by white space characters, and a newline number is added at the end.

No line breaks: echo-n "character" or echo-e "character \c"

1. Echo Sample

Output sample

2. '-e' followed by ' \b ' removes all spaces between characters.

Note: The option '-e' in Linux plays the translation of the escape character backslash.

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

Output tecmintisacommunityoflinuxnerds

3. ' \ n ' line after '-e' in the place where it was encountered as a new row

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

Tecmint

Is

A

Community

Of

Linux

Nerds

4. Use the newline '\ n' With the Horizontal tab ' \t'

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

Output Tecmint is a community of Linux nerds

5. '-e' followed by ' \v ' will add vertical tabs.

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

Tecmint

Is

A

Community

Of

Linux

Nerds

6. Use the newline '\ n' With the Horizontal tab ' \t'

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

Output

Tecmint

is

A

Community

of

Linux

Nerds

7. You can use line break '\ n' with vertical tab '\v'

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

Tecmint

Is

A

Community

Of

Linux

Nerds

8. '-e' followed by ' \ R ' to specify the carriage return character in the output. (LCTT: The characters at the beginning of a line will be covered)

echo -e "Tecmint \ris a community of Linux nerds"

Output

is a community of Linux nerds

-N	does not output a newline character at the end.
-E	Enable backslash escaping.
\b	Backspace
\\	Reverse Slash
\ n	New lines
\ r	Enter
\ t	Horizontal tab
\v	Vertical tab

1th Linux Command--echo