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Questions tagged [echo]

It is a built-in command typically used in shell scripts to output status text to the screen or a file.

89 questions
66
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2 answers

Why is there a /bin/echo and why would I want to use it?

I noticed that there is a binary executable /bin/echo on my Ubuntu MATE 17.04 system. I thought, that's odd, because $ type echo echo is a shell builtin Cursory testing suggests that /bin/echo does the same sort of thing as the Bash builtin echo: $…
Zanna
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25
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9 answers

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 "$(tput setaf 2)Wake up neo....." sleep 2s echo "$(tput setaf 2)The…
SimplySimplified
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21
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1 answer

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 Hello, then \, then a newline character (and then…
yolin00
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20
votes
9 answers

How to print "-n" without issuing a newline?

I'm trying to print -n using the echo command. But if i simply type echo -n, it only issues a newline, not show up -n, instead it issues a newline.
Star OS
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19
votes
5 answers

Appending a line to a file in the cat command?

I can do cat file.txt to get the contents of a file but I also want to tack on a final line of my own choosing. I tried piping (cat file.txt ; echo "My final line") | but only the final line is getting passed through the pipe. How can I join the cat…
DoubleBass
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15
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2 answers

Using “while read…”,echo and printf get different outcomes

According to this question "Using "while read..." in a linux script" echo '1 2 3 4 5 6' | while read a b c;do echo "$a, $b, $c"; done outcome: 1, 2, 3 4 5 6 but when I replace echo with printf echo '1 2 3 4 5 6' | while read a b c ;do printf "%d,…
user3094631
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10
votes
1 answer

'top' shows 'echo "find"' processes using 100% CPU time

I have an Ubuntu 14.04 server, and found that some processes are running with root privileges and takes all my processor time. The processes are called 'echo "find"'. What are these, and how can I stop them?
András Galli
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9
votes
2 answers

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-cancel". I am using the pulseaudio module…
Paulo Coghi
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7
votes
2 answers

Difference between " " and ' ' in bash

I am trying to figure out what is the difference between " " and ' '. When I use them with echo they both give the same result, sps@sps-Inspiron-N5110:~$ echo Hello world Hello world sps@sps-Inspiron-N5110:~$ echo "Hello world" Hello …
sps
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6
votes
3 answers

Is there a better way to create a file in bash other than using touch and echo?

I created a bash script that installed some applications and wrote a .conf file. I wanted my bash script to create the file for me so I could just run the file and it set it all up. was there a better way of going about it than this or did I do it…
Jermayne Williams
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6
votes
1 answer

Amazon Echo "Alexa" now only shows up as an input device

So, I've been using my Amazon Echo (the big tower, not the little "dot") as a bluetooth speaker with my Ubuntu laptop without any trouble. BUT a few days ago it started showing up only as an input device, not an output device at all. In fact,…
SenseiWarren
  • 121
6
votes
3 answers

Why does echo $$ return a number?

Why does running echo $$ in bash return a number like 7190, while running echo $ only returns a $?
user8292439
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How can you printf or echo the contents of your clipboard?

Alternatively, how can you dump the contents of your clipboard to a text file? If at all possible, I'd like this for the actual clipboard, but also the clipboard delegated to highlighted text, and even vim's if you can manage it. I figure if you can…
Anon
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6
votes
2 answers

Prompt overwrite file in echo

I am writing to a file using simple echo (I'm open to using other methods). When writing to a file that already exists, can I make echo prompt the user to overwrite or not? For eg, maybe an argument like -i would work? echo -i "new text" >…
sazr
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2 answers

\n doesn't work on terminal

\n is not recognized as "change line". It just prints \n. My terminal is gnome terminal 3.6.2. First I noticed it with echo commands,and then with shell scripts. Any suggestions as to why it doesn't work?
PaschalisAv
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