xmlcopyeditor: 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/xmlcopyeditor - from package: xmlcopyeditor

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

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