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

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

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