sdcc: 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/sdcc - from package: cc1111
/usr/bin/sdcc - from package: sdcc

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

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