ldappasswd2: 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/ldappasswd2 - from package: debian-edu-config

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

Error in other languages:
ldappasswd2: bevel nie gevind nie
ldappasswd2: comandă negăsită
ldappasswd2: comando não encontrado
ldappasswd2: commande introuvable
ldappasswd2: command not found
ldappasswd2: käsku ei ole
ldappasswd2: không tìm thấy lệnh
ldappasswd2: komanda nerasta
ldappasswd2: Kommando nicht gefunden.
ldappasswd2: kommandot finns inte
ldappasswd2: komut yok
ldappasswd2: nie znaleziono polecenia
ldappasswd2: níor aimsíodh an t-ordú
ldappasswd2: no se encontró la orden
ldappasswd2: no s'ha trobat l'ordre
ldappasswd2: opdracht niet gevonden
ldappasswd2: parancs nem található
ldappasswd2: perintah tidak ditemukan
ldappasswd2: príkaz nenájdený
ldappasswd2: příkaz nenalezen
ldappasswd2: команда не найдена
ldappasswd2: командата не е открита
ldappasswd2: 命令找不到
ldappasswd2: コマンドが見つかりません