recomp: 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/share/doc/mh-book/examples/mh/bin/recomp - from package: mh-book

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

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