smbnetfs: command not found

Have You tried accessing the binary with the full path?

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/smbnetfs - from package: smbnetfs

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