xstdcmap: 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/xstdcmap - from package: xorg-x11-server-utils

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

On Debian possible default full paths are:

/usr/bin/xstdcmap - from package: x11-xserver-utils

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

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