A quick guide to the
printenv command, used to print the values of environment variables
In any shell there are a good number of environment variables, set either by the system, or by your own shell scripts and configuration.
You can print them all to the terminal using the
printenv command. The output will be something like this:
HOME=/Users/flavio LOGNAME=flavio PATH=/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/Apple/usr/bin PWD=/Users/flavio SHELL=/usr/local/bin/fish
with a few more lines, usually.
You can append a variable name as a parameter, to only show that variable value:
printenv command works on Linux, macOS, WSL, and anywhere you have a UNIX environment