formed: 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/formed - from package: formed

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

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