echo
- Write output to standard input
| Option | Usage | Example |
|---|---|---|
-n |
Do not appened to a new line. The terminal curser will be in the same line as the output instead of being in a new line by default . |
[aaakriti@aakriti ~]$ echo -n "Harry Potter" Harry Potter[aaakriti@aakriti ~]$ write your next command here
|
-e |
enables interpretation of \ backslash escapes |
Will be used in combination of \ options |
-E |
Opposite of -e. Explicitly supress interpretation of backslash escapes |
Will be used in combination of \ options |
\a |
Alert through Volume. Make sure your volume is high. It will ring a ting on an output |
[aaakriti@aakriti ~]$ echo -e "\aHarry Potter" Harry Potter
|
\b |
Backspace, removes all spaces between the texts |
[aaakriti@aakriti ~]$ echo -e "Harry \bPotter" HarryPotter
|
\b |
It removes the n no. of character occurring before the \b used. Depending on the no. pf times used |
[aaakriti@aakriti ~]$ echo -e "Harry\b\bPotter" HarPotter
|
\c |
Suppress further output. Will not output whatever is written after \c
|
[aaakriti@aakriti ~]$ echo -e "Harry \c Potter is my favourite" Harry
|
\e |
Escape character. Omits the just next single character succeeding to \e
|
[aaakriti@aakriti ~]$ echo -e "\eHarry" arry
|
\n |
Creates a new line |
[aaakriti@aakriti ~]$ echo -e "Harry \nPotter \nis \nmy \nfavourite" Harry Potter is my favourite
|
\r |
Carriage return. Will not return whatever is return before \r. opposite of \c
|
[aaakriti@aakriti ~]$ echo -e "Harry \r Potter is my favourite" Potter is my favourite
|
\t |
Horizontal tabs. Use tabs as spaces. |  |
\v |
Vertical tab space. In a slanting manner |  |
Other tricks
| Option | Usage |
|---|---|
echo * |
Lists all files and folders |
echo $x |
echo value of a variable |
\n + \t |
new line + tab |
\n + \v |
new line + verticle tab |
echo "Test" > testpage.log |
will add contents to a file |
1. echo 'Harry "Potter"' 2. echo "Harry \"Potter\""
|
Harry "Potter" |
echo $(command) |
Output of the command |
echo ~ |
home folder |
echo {1..5} |
1 2 3 4 5 |
echo $((50*2)) |
100 |
1. echo -e "\033[1;37mWHITE" 2. echo -e "\033[0;34mBLUE"
|
Display in respective colors |
Fun tricks
- Make someone get lost in dark black world of linux:
echo -e "\033[0;30mBLACK"{"mode":"full","isActive":false}
Top comments (2)
A better title might be:
Shell: Echo
or maybe even more fitting:
GNU: Echo
As the
echocommand is a GNU Core utility and is used in any environment/operating system that uses the GNU Core Utilities, not just Linux.Also, since this is for novice people you might want to explain ways that they can get this info themselves locally on their machines so they don't have to depend on a web browser; a couple of examples:
The manual pages (MAN):
and (sometimes)
-h, --helpWell actually, you are right and thanks for the feedback.
What I am trying to create is a friendly man page with examples to work as a to-go place. The reason it is tabular is because we often have to go deep into an article skimming things to find what we are looking for. To solve this problem and save time, I created a table. Everything is in front of your eyes, skim and choose what you are looking for.