confdb2ldif: 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/sbin/confdb2ldif - from package: cman

You may install the required package with command apt-get install {package}
Error in other languages:
confdb2ldif: bevel nie gevind nie
confdb2ldif: comandă negăsită
confdb2ldif: comando não encontrado
confdb2ldif: commande introuvable
confdb2ldif: command not found
confdb2ldif: käsku ei ole
confdb2ldif: không tìm thấy lệnh
confdb2ldif: komanda nerasta
confdb2ldif: Kommando nicht gefunden.
confdb2ldif: kommandot finns inte
confdb2ldif: komut yok
confdb2ldif: nie znaleziono polecenia
confdb2ldif: níor aimsíodh an t-ordú
confdb2ldif: no se encontró la orden
confdb2ldif: no s'ha trobat l'ordre
confdb2ldif: opdracht niet gevonden
confdb2ldif: parancs nem található
confdb2ldif: perintah tidak ditemukan
confdb2ldif: príkaz nenájdený
confdb2ldif: příkaz nenalezen
confdb2ldif: команда не найдена
confdb2ldif: командата не е открита
confdb2ldif: 命令找不到
confdb2ldif: コマンドが見つかりません