urlview: 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/urlview - from package: urlview

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

On Debian possible default full paths are:

/usr/bin/urlview - from package: urlview

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

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