wbar: 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/wbar - from package: wbar

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

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