includemocs: 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 CentOS possible default full paths are:

/usr/bin/includemocs - from package: kdesdk

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/includemocs - from package: kdesdk-scripts

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

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