usbip: 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/sbin/usbip - from package: usbip

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

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