autoinc: 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/autoinc - from package: mh-book

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

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