vino-preferences: 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/vino-preferences - from package: vino

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

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