monotone-viz: 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/monotone-viz - from package: monotone-viz

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

On Debian possible default full paths are:

/usr/bin/monotone-viz - from package: monotone-viz

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

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