bsh: 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/bsh - from package: bsh

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

On Debian possible default full paths are:

/usr/bin/bsh - from package: bsh

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

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