gdcmxml: 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/gdcmxml - from package: libgdcm-tools

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

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