ioprofiler: 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 Debian possible default full paths are:

/usr/bin/ioprofiler - from package: ioapps

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

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