apmd: 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

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/apmd - from package: apmd

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