gfan_tropicalstartingcone: 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/gfan_tropicalstartingcone - from package: gfan

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

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