$ echo "Tralala pouet pouet"
Tralala pouet pouet
$ echo "Tralala pouet pouet" | base64
VHJhbGFsYSBwb3VldCBwb3VldAo=
$ echo VHJhbGFsYSBwb3VldCBwb3VldAo= | base64 -d
Tralala pouet pouet
$ echo VHJhbGFsYSBwb3VldCBwb3VldAo= | recode /b64
Tralala pouet pouet
$ echo "Tralala pouet pouet" | recode ../b64
VHJhbGFsYSBwb3VldCBwb3VldAo=