wmpinboard: 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/wmpinboard - from package: wmpinboard

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

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