hxcopy: 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/hxcopy - from package: html-xml-utils

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

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