moin-mass-migrate: 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/moin-mass-migrate - from package: python-moinmoin

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

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