waitmax: 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/waitmax - from package: check-mk-agent

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

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