ib_qlgc_vnic_update: 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/sbin/ib_qlgc_vnic_update - from package: qlvnictools

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

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