vimx: 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/vimx - from package: vim-X11

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

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