ibacm: 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/ibacm - from package: ibacm

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

On Debian possible default full paths are:

/usr/sbin/ibacm - from package: ibacm

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

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