bssh: 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/bssh - 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/bssh - from package: avahi-ui-utils

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

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