ibroute: 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/ibroute - from package: infiniband-diags

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

On Debian possible default full paths are:

/usr/sbin/ibroute - from package: infiniband-diags

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

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