visualinfo: 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/visualinfo - from package: glew

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

On Debian possible default full paths are:

/usr/bin/visualinfo - from package: glew-utils

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

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