vltsv: 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/vltsv - from package: qdbm-util

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