cfenvgraph: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH

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/lib/debug/usr/sbin/cfenvgraph - from package: cfengine2-dbg
/usr/sbin/cfenvgraph - from package: cfengine2

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