famd: 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/sbin/famd - from package: fam

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