profitbricks-client: 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/profitbricks-client - from package: python-profitbricks-client

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

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