Questions tagged [echo]
It is a built-in command typically used in shell scripts to output status text to the screen or a file.
86
questions
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votes
1
answer
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views
I would like to have an echo in 1 line for my ASCII art but I can't manage. PLS Help [closed]
I would like to have an echo in 1 single line for my ASCII art but I can't manage. PLS Help
link to my ASCII:
https://ascii-generator.site/r/Mor3V1/
PLS Help it is urgent
0
votes
0
answers
271
views
How can I stop displaying echo in a script
I have a bash script which generates another script. I would like echo output to file only,
but it displays on screen whatever I try (&> for example).
Here is the code :
while read line; do ...
0
votes
1
answer
712
views
Echo something to another terminal session?
Is there any way to echo something to another terminal session, obtained from the who command? For example, root user echoes a message to a different user's terminal session, after getting their ...
3
votes
1
answer
720
views
How do I echo a file path after interpreting characters like dots '.' and tildes '~'?
I want to write a bash script that accepts, as an input argument, a file specification that includes one or more uses of the special characters ., .., and ~. I want my script's output to echo Bash's ...
1
vote
2
answers
2k
views
How do I add the repository for Unity?
This is the command I am trying to run:
sudo sh -c echo deb "https://hub.unity3d.com/linux/repos/deb stable main" > /etc/apt/sources.list.d/unityhub.list'
I am trying to install unity to ...
1
vote
1
answer
281
views
Print double quotes in file
I would like to print this to a file
echo "hello world "today"" > /tmp/file.log
have as a result on /tmp/file.log
hello world "today"
6
votes
1
answer
1k
views
my ubuntu shows shell script echo in strange way
Hi I have a file with shell script which looks like this
#!/bin/bash
todayDate=$(date)
echo "Today's date is ${todayDate}. have a nice weekend!"
but when I call this file in my ubuntu ...
0
votes
3
answers
6k
views
How can I disable echo in terminal
This might seem simple but sometimes I need terminal to not echo anything ,
whether for a specific command or all commands.
in windows I could simply do echo off
I tend to make files with cat command ...
0
votes
2
answers
1k
views
echo command breaks lines, being used in loops [duplicate]
In my file 'foo' there is a first line: 'a b', and the second line: 'c d':
$ cat foo
a b
c d
I want to print in terminal in loop these two lines: one after another:
$ for i in $(cat foo); do echo $i;...
2
votes
0
answers
550
views
Ubuntu - Other people can hear whatever I play during call
During Google Meet call, other people can hear whatever I can from my computer without me sharing my screen. It can be Youtube, FB video from Chrome or song I play on the Spotify app, whatever kind of ...
0
votes
1
answer
2k
views
Exec format error with "data" file format
Does anyone knows why it gives format error when i try to run echo through /bin/echo or /usr/bin/echo but works well if i just type echo in the command line
bash: /usr/bin/echo: cannot execute binary ...
1
vote
1
answer
4k
views
Unable to read from serial port on command line
I tried reading from /dev/ttyS0 on 1 terminal as root with cat:
cat < /dev/ttyS0
and sending message to the serial port from another terminal as root with echo:
echo -ne "hello" > /...
-1
votes
1
answer
1k
views
How to print bold text in terminal? [closed]
var=apple
echo " the $var is a fruit "
I want to print the apple is a fruit in bold
I tried this
echo $'\e[32;1m the $var is a fruit\e[0m\e ;'
but not working, please help me.
1
vote
2
answers
1k
views
What is the difference between using "echo" command and editing using "vi" when making changes to .bashrc file?
I finished installing a program and some websites tell me to use the echo command to export an environment variable to the .bashrc file while others say to use vi .bashrc to edit the file directly. I ...
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votes
2
answers
3k
views
How to use echo output as a variable
I simulated the situation where the value of variable bar is $foo. foo is a variable too, which has the value hello.
$ foo=hello
$ bar=$(echo "\$foo")
$ echo $bar
$foo
How I can get to ...
-1
votes
1
answer
119
views
Echo it's terminal problem [duplicate]
When I type
echo it's terminal
or anything containing 'blah blah terminal blah blah with echo the output shows
Blockquote
what does this mean.
-1
votes
1
answer
171
views
Make echo based command clickable
I have this command:
echo -en '\033p011' | lp -d EPSON_TM-T20III -o raw
It opens cash drawer via epson thermal printer
It works perfect when i execute it in terminal. But i want it as a clicable file/...
0
votes
1
answer
487
views
Aliasing cd && echo doesn't work properly
I'm trying to create an alias that changes the directory and prints some content.
I've wrote this line:
alias test="cd ~/Documents/MyDir && echo 'content'"
The result is:
content
~$:...
0
votes
1
answer
686
views
create multiple files made up of a range of values
Using linux command line I wish to create multiple text files with variables a,b,c increasing by a set range each time with a particular max., as below
txt file 1
a 2
b 1
c 3
txt file 2
a 3
b 2
c 4 ...
0
votes
1
answer
169
views
Why I can't display/echo -e?
I am working on a project where I need to pass the value of "-e" meaning "end date" to java program(jar file) but when I tried to debug it by displaying its value(echo) if it's ...
0
votes
3
answers
179
views
Why does the following zsh command change my output? [closed]
When I execute this command
port=3128
echo $port:localhost
I get 3128ocalhost as output.
PS:
When I change the first 'l' char it works fine.
I can't even google it.
0
votes
1
answer
305
views
BlueTooth device(output) and PulseAudio's module-echo-cancel help needed
I'm trying to run PulseAudio's 'module-echo cancel' filter on my bluetooth speaker(output only).
I've edited /etc/pulse/default.pa like that:
.ifexists module-echo-cancel.so
load-module module-echo-...
0
votes
3
answers
741
views
Create new text file with echo only
I have a repertory called 'data' and have multiple random files in it.
I want to create a 'results.txt' file with all the names of the files in 'data'.
I want to use only the command echo in one ...
0
votes
2
answers
3k
views
Noise/Echo Cancelling Software for ubuntu 18.04 LTS
is there any noise cancelling software that filters background noise in ubuntu which can make my mic sound clearer when I record a voice/audio
2
votes
1
answer
663
views
tee: constraint_0_power_limit_uw: No data available
I am trying to replace value in the file of constraint_0_power_limit with new value using echo "45000000" | sudo tee constraint_0_power_limit_uw
That file is under /sys/class/powercap/intel-rapl/...
1
vote
1
answer
537
views
Why would one want to allow in an echo protocol (port 7) from host router?
I am in the process of replacing an Ubuntu server originally designed by someone else at work. I expect there will be many issues with getting Windows (and really LabVIEW) to interface with all the ...
6
votes
1
answer
2k
views
How to print variable value in next line using echo command
I'm getting a curl command output as below
curl -s https://api.github.com/repos/harshavardhanc/dockerfile-ansible/pulls\?state\=all | jq -r '.[]|(.number|tostring)+" "+.user.login+" "+.created_at+" "...
21
votes
1
answer
2k
views
Why don't "echo -e" commands seem to produce the right output?
In the terminal of Ubuntu 18.04 LTS, when I write this command:
echo -e "Hello\\\n"
It gives this as the output:
Hello\n
But it should print, as the man page says:
Hello\
That is, first print ...
1
vote
2
answers
973
views
How to echo commands to other file
I want to make echo from one script to another script, but I don't want to get the output of the command because I want to use this command in another script, I need to create a script that creates ...
0
votes
1
answer
172
views
how to display number of lines in running shell file
For my assignment i need to display the current number of lines inside of a shell file, below i have implemented the wc -l command inside of my program but instead of displaying the number of lines my ...
0
votes
1
answer
123
views
File's order got destroyed while grepping and echoing into for loop
I want to write the result of grep inside for loop into a file, keeping original file structure.
Original file:
$cat newtest1
some_text
/homes/myself/joz
ivan petrov - 20/10/19
new customer:
/homes/...
0
votes
2
answers
91
views
What !! means while calling echo [duplicate]
Could somebody explain this output?
$ echo !
!
$ echo !!
echo echo !
echo !
$
I expected sedond echo to write only !!
1
vote
3
answers
9k
views
curl, sh, what do those commands mean?
I've been wandering in the web and saw this about how to install atom, the new text editor:
$ curl -sL https://packagecloud.io/AtomEditor/atom/gpgkey | sudo apt-key add -
$ sudo sh -c 'echo "deb [...
2
votes
0
answers
1k
views
Avoid trailing whitespace when copy/pasting from bash/byobu terminal
I wrote a bash script that computes information and echoes it into my byobu terminal.
I then select the whole thing with my mouse and paste it into a Gmail conversation after editing it a bit.
...
0
votes
1
answer
184
views
Every terminal I open starts with this code, how can I stop this?
every time I open up a terminal it starts with this.
export PATH="/home/name/.rbenv/shims:${PATH}"
export RBENV_SHELL=bash
source '/home/name/.rbenv/libexec/../completions/rbenv.bash'
command rbenv ...
6
votes
1
answer
5k
views
Why there is a difference between the output of 'echo $VAR | wc -c' and 'echo ${#VAR}'?
I'm working on a Bash script and the length of the string contained in a certain variable is one of my conditions. The current string is W5u7TBTzF17GGFV8DBJHvgAAAAI. Initially I've count the string ...
1
vote
1
answer
153
views
How do commands fill up the screen?
Some commands, like curl if you do the -# option, fill up the entire screen, even if you resize. How is this done?
4
votes
1
answer
295
views
echo command variations
Worked for years but now at least \begin and \end are handled especially.
The change in echo behaviour must be new. Even if echo is not portable and the dash echo doesnt support -e / -E options ...
0
votes
1
answer
751
views
Escape command in echo
I have some really long and complex command containing both types of quotes: " and ', for example like:
cd folder && command --hel="p_me:'please' anyone:'here?'" ; command2 --end='my:"trouble"...
2
votes
0
answers
170
views
I want to enable mic echo-cancellation in Ubuntu Mate, but it doesn't work. Please, help!
Please help! I want to enable echo-cancellation in Ubuntu Mate. I watched Yt tutorials and answers on this forum. For solutions like this:
Edit /etc/pulse/default.pa and add the following lines to the ...
0
votes
1
answer
175
views
Executing echo Command Using Launcher Icon [duplicate]
I am controlling the fan speed on my notebook using acpi and the command:
echo level n > /proc/acpi/ibm/fan
where level n is a number between 1 and 7.
It works, and after I changed the ...
26
votes
10
answers
62k
views
How to print text in the terminal as if it's being typed?
I have a simple echo print out that I've added to my .bashrc:
echo "$(tput setaf 2)Wake up....."
sleep 2s
reset
sleep 2s
echo "$(tput setaf 2)Wake up....."
sleep 2s
reset
echo "$(tput setaf 2)Wake up ...
9
votes
2
answers
11k
views
Disable volume auto adjust in pulseaudio "module-echo-cancel"
Important: this question How to disable microphone from auto adjusting its input volume doesn't cover this scenario.
This question is about the volume auto adjust feature of pulseaudio "module-echo-...
-1
votes
4
answers
4k
views
Split echo's output on two lines
It is written in the manual that /n will split the output of echo command to the next line. I tried:
echo -e 'hello /n world'
hello /n world
Expecting 'world' on the next line. I failed.
0
votes
1
answer
70
views
I am quite unsure of how echo command works in the following two scenarios [duplicate]
I have tried fiddling with echo command to to add $_GET to a text file but looks like it does not work but escaping it with \ works may be because $ is special character in bash.
For example, echo "\...
0
votes
0
answers
266
views
Echo and Cat output problem
I'm trying to run this script:
#!/bin/bash
for file in /home/dima/Downloads/dir/*
do
if [ -f "$file" ]
then
echo "SSS::################====================#####################" >> ...
0
votes
1
answer
896
views
echo "eval `dircolors ${dircolorsdb}`" >> ~/.zshrc didn't work as I expected
I want to insert
eval `dircolors $HOME/.dir_colors/dircolors.256dark`
in my ~/.zshrc
I assigned a variable:
dircolorsdb=$HOME/.dir_colors/dircolors.256dark
I expect double quotes to result in ...
0
votes
1
answer
47k
views
What does the echo command do? [duplicate]
I am fairly new to Linux and all I know for sure about the command echo is that when you type a word after it, such as echo Linux!, it prints out Linux!. Is there anything else echo does?
I don't ...
5
votes
1
answer
5k
views
Error using sudo -stdin
I'm trying to use the -S stdin arg on sudo.
I tried this:
echo 'mypass' | sudo -S cat /etc/shadow
And
echo 'mypass\n' | sudo -S cat /etc/shadow
As the man pages suggest to add a newline.
Both ...
3
votes
1
answer
446
views
Error while trying to post $PS1 on my terminal
I have tried to echo $PS1 on my terminal to find out the [u@h W]
this is the error I get.
echo $PS1
%{$fg_bold[green]%}%n@%m %{$fg[blue]%}%D{[%X]} %{$reset_color%}%{$fg[white]%}[%~]%{$reset_color%} $...