splitti3: 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/splitti3 - from package: argyll

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

Error in other languages:
splitti3: bevel nie gevind nie
splitti3: comandă negăsită
splitti3: comando não encontrado
splitti3: commande introuvable
splitti3: command not found
splitti3: käsku ei ole
splitti3: không tìm thấy lệnh
splitti3: komanda nerasta
splitti3: Kommando nicht gefunden.
splitti3: kommandot finns inte
splitti3: komut yok
splitti3: nie znaleziono polecenia
splitti3: níor aimsíodh an t-ordú
splitti3: no se encontró la orden
splitti3: no s'ha trobat l'ordre
splitti3: opdracht niet gevonden
splitti3: parancs nem található
splitti3: perintah tidak ditemukan
splitti3: príkaz nenájdený
splitti3: příkaz nenalezen
splitti3: команда не найдена
splitti3: командата не е открита
splitti3: 命令找不到
splitti3: コマンドが見つかりません