dbverify: 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/sbin/dbverify - from package: 389-ds-base
/usr/bin/dbverify - from package: lifelines

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

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