invesalius-3.0: 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/invesalius-3.0 - from package: invesalius

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

Error in other languages:
invesalius-3.0: bevel nie gevind nie
invesalius-3.0: comandă negăsită
invesalius-3.0: comando não encontrado
invesalius-3.0: commande introuvable
invesalius-3.0: command not found
invesalius-3.0: käsku ei ole
invesalius-3.0: không tìm thấy lệnh
invesalius-3.0: komanda nerasta
invesalius-3.0: Kommando nicht gefunden.
invesalius-3.0: kommandot finns inte
invesalius-3.0: komut yok
invesalius-3.0: nie znaleziono polecenia
invesalius-3.0: níor aimsíodh an t-ordú
invesalius-3.0: no se encontró la orden
invesalius-3.0: no s'ha trobat l'ordre
invesalius-3.0: opdracht niet gevonden
invesalius-3.0: parancs nem található
invesalius-3.0: perintah tidak ditemukan
invesalius-3.0: príkaz nenájdený
invesalius-3.0: příkaz nenalezen
invesalius-3.0: команда не найдена
invesalius-3.0: командата не е открита
invesalius-3.0: 命令找不到
invesalius-3.0: コマンドが見つかりません