![Forrest logo](/images/logo.png)
envsubst:tldr:db1ea
This command is used to substitute the value of the $HOME
environment variable within a string by using the envsubst
command.
The echo '${$HOME}'
part of the command prints the string '$HOME'
to the standard output. The single quotes around $HOME
ensure that the variable is not expanded by the shell during the echo command.
The output of the echo
command ('$HOME'
) is then piped (|
) to the envsubst
command. envsubst
is a command-line utility that substitutes the values of environment variables found in a string. In this case, it will substitute the value of the $HOME
environment variable within the string '$HOME'
.
The envsubst
command receives the string '$HOME'
through the standard input and replaces the $HOME
with the value of the actual $HOME
environment variable. For example, if the value of $HOME
is /home/example
, the output of the command will be /home/example
.
So, the overall purpose of this command is to replace the $HOME
placeholder in the string with the actual value of the $HOME
environment variable.