dellWirelessCtl: 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/bin/dellWirelessCtl - from package: smbios-utils-python
/usr/sbin/dellWirelessCtl - from package: smbios-utils-python

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

On Debian possible default full paths are:

/usr/sbin/dellWirelessCtl - from package: smbios-utils

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

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