reclass: 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/reclass - from package: reclass

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

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