incrond: 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/sbin/incrond - from package: incron

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

On Debian possible default full paths are:

/usr/sbin/incrond - from package: incron

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

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