fh2odg: 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/bin/fh2odg - from package: fh2odg

You may install the required package with command apt-get install {package}
Error in other languages:
fh2odg: bevel nie gevind nie
fh2odg: comandă negăsită
fh2odg: comando não encontrado
fh2odg: commande introuvable
fh2odg: command not found
fh2odg: käsku ei ole
fh2odg: không tìm thấy lệnh
fh2odg: komanda nerasta
fh2odg: Kommando nicht gefunden.
fh2odg: kommandot finns inte
fh2odg: komut yok
fh2odg: nie znaleziono polecenia
fh2odg: níor aimsíodh an t-ordú
fh2odg: no se encontró la orden
fh2odg: no s'ha trobat l'ordre
fh2odg: opdracht niet gevonden
fh2odg: parancs nem található
fh2odg: perintah tidak ditemukan
fh2odg: príkaz nenájdený
fh2odg: příkaz nenalezen
fh2odg: команда не найдена
fh2odg: командата не е открита
fh2odg: 命令找不到
fh2odg: コマンドが見つかりません