rawtominc: 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/rawtominc - from package: minc-tools

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