ibqueryerrors: 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/ibqueryerrors - from package: infiniband-diags

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

On Debian possible default full paths are:

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

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

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