$ python3 -c 'print("Hello world!")'
Hello world!

$ jesuis=$(grep ^$(whoami) /etc/passwd |awk -F: '{print $5}') 
$ echo ${jesuis::-3}
Xavier Lüthi 

$ gpg --fingerprint 6998E5C4
pub   4096R/6998E5C4 2014-02-03
      Empreinte de la clef = 6DF1 8403 037B 3036 A6F7  172C 3877 06A2 6998 E5C4
uid                  Xavier Lüthi <xavier@luthi.eu>
uid                  Xavier Lüthi <xluthi@debian.org>
sub   4096R/5EF52F75 2014-02-03

$ lsb_release -d
Description:	Linux Mint 18.3 Sylvia
$ ssh fischer lsb_release -d
Description:	Debian GNU/Linux 9.3 (stretch)

$ echo "Donation Bitcoin: " $(electrum getunusedaddress)
Donation Bitcoin:  1Cs4DHQdRf4GC5DpEtuuq3XwQfmm5bDjYF

ma clé PGP