universal: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/universal - from package: libdivecomputer0

You may install the required package with command apt-get install {package}

Error in other languages:
universal: bevel nie gevind nie
universal: comandă negăsită
universal: comando não encontrado
universal: commande introuvable
universal: command not found
universal: käsku ei ole
universal: không tìm thấy lệnh
universal: komanda nerasta
universal: Kommando nicht gefunden.
universal: kommandot finns inte
universal: komut yok
universal: nie znaleziono polecenia
universal: níor aimsíodh an t-ordú
universal: no se encontró la orden
universal: no s'ha trobat l'ordre
universal: opdracht niet gevonden
universal: parancs nem található
universal: perintah tidak ditemukan
universal: príkaz nenájdený
universal: příkaz nenalezen
universal: команда не найдена
universal: командата не е открита
universal: 命令找不到
universal: コマンドが見つかりません