osinfo-db-validate: 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/osinfo-db-validate - from package: libosinfo-bin

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

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