One of the most useful commands in a Linux environment is echo. With it, you can provide output to the SSH console and also test to see what your other commands will expand to if you’re using brace expansions. It can also be used to check system variables and more. In this tutorial, we will cover the basic usage of SSH echo command with examples.
Basic echo usage with SSH
echo Some text here echo "Some text here"
Outputting a system variable
var='this is a variable' echo $var echo $USER
Output with interpretation of special characters
echo -e "This is the first line \n This is the second line \n This is the third line
Output a command before executing it with SSH
If you wish to know what your command will run you can first echo it, for example, if we change all .txt files to .pdf with mv we can use echo to see the input first
echo mv files.{txt,pdf}
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