dcfile: 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 Debian possible default full paths are:

/usr/bin/dcfile - from package: dicom3tools

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

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