mymeta-cpanfile: 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/bin/mymeta-cpanfile - from package: libmodule-cpanfile-perl

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