dib-lint: 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/dib-lint - from package: python-diskimage-builder

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

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