smbspool: 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 CentOS possible default full paths are:

/usr/bin/smbspool - from package: samba4-client
/usr/bin/smbspool - from package: samba-client

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/smbspool - from package: smbclient

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

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