fosread: 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/fosread - from package: fosfat

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

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