rmdfile: 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 CentOS possible default full paths are:

/usr/bin/rmdfile - from package: mgetty-voice

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/rmdfile - from package: mgetty-pvftools

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

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