ftprm: 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/ftprm - from package: qftp

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

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