usbview: 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/usbview - from package: usbview

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

On Debian possible default full paths are:

/usr/bin/usbview - from package: usbview

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

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