x2gosetkeyboard: 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/x2gosetkeyboard - from package: x2goserver

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

Error in other languages:
x2gosetkeyboard: bevel nie gevind nie
x2gosetkeyboard: comandă negăsită
x2gosetkeyboard: comando não encontrado
x2gosetkeyboard: commande introuvable
x2gosetkeyboard: command not found
x2gosetkeyboard: käsku ei ole
x2gosetkeyboard: không tìm thấy lệnh
x2gosetkeyboard: komanda nerasta
x2gosetkeyboard: Kommando nicht gefunden.
x2gosetkeyboard: kommandot finns inte
x2gosetkeyboard: komut yok
x2gosetkeyboard: nie znaleziono polecenia
x2gosetkeyboard: níor aimsíodh an t-ordú
x2gosetkeyboard: no se encontró la orden
x2gosetkeyboard: no s'ha trobat l'ordre
x2gosetkeyboard: opdracht niet gevonden
x2gosetkeyboard: parancs nem található
x2gosetkeyboard: perintah tidak ditemukan
x2gosetkeyboard: príkaz nenájdený
x2gosetkeyboard: příkaz nenalezen
x2gosetkeyboard: команда не найдена
x2gosetkeyboard: командата не е открита
x2gosetkeyboard: 命令找不到
x2gosetkeyboard: コマンドが見つかりません