ipmi-chassis: command not found

Have You tried accessing the binary with the full path?

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/ipmi-chassis - from package: freeipmi

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

On Debian possible default full paths are:

/usr/sbin/ipmi-chassis - from package: freeipmi-tools

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