metaxref: 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/metaxref - from package: dist

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

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