fmit: 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/fmit - from package: fmit

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

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