bshell: 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/bshell - from package: avahi-ui-tools

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

On Debian possible default full paths are:

/usr/bin/bshell - from package: avahi-ui-utils

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

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