pybootchartgui: 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 Debian possible default full paths are:

/usr/bin/pybootchartgui - from package: pybootchartgui

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

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