dtos8cvt: 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
/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/dtos8cvt - from package: simh

You may install the required package with command apt-get install {package}
Error in other languages:
dtos8cvt: bevel nie gevind nie
dtos8cvt: comandă negăsită
dtos8cvt: comando não encontrado
dtos8cvt: commande introuvable
dtos8cvt: command not found
dtos8cvt: käsku ei ole
dtos8cvt: không tìm thấy lệnh
dtos8cvt: komanda nerasta
dtos8cvt: Kommando nicht gefunden.
dtos8cvt: kommandot finns inte
dtos8cvt: komut yok
dtos8cvt: nie znaleziono polecenia
dtos8cvt: níor aimsíodh an t-ordú
dtos8cvt: no se encontró la orden
dtos8cvt: no s'ha trobat l'ordre
dtos8cvt: opdracht niet gevonden
dtos8cvt: parancs nem található
dtos8cvt: perintah tidak ditemukan
dtos8cvt: príkaz nenájdený
dtos8cvt: příkaz nenalezen
dtos8cvt: команда не найдена
dtos8cvt: командата не е открита
dtos8cvt: 命令找不到
dtos8cvt: コマンドが見つかりません