vdb_print: 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/vdb_print - from package: libopenvdb-tools

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

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