besinfo: 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/besinfo - from package: mcrl2

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

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