wxcopy: 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/wxcopy - from package: WindowMaker

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

On Debian possible default full paths are:

/usr/bin/wxcopy - from package: wmaker

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

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