bin2m: 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/bin2m - from package: ergo

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

Error in other languages:
bin2m: bevel nie gevind nie
bin2m: comandă negăsită
bin2m: comando não encontrado
bin2m: commande introuvable
bin2m: command not found
bin2m: käsku ei ole
bin2m: không tìm thấy lệnh
bin2m: komanda nerasta
bin2m: Kommando nicht gefunden.
bin2m: kommandot finns inte
bin2m: komut yok
bin2m: nie znaleziono polecenia
bin2m: níor aimsíodh an t-ordú
bin2m: no se encontró la orden
bin2m: no s'ha trobat l'ordre
bin2m: opdracht niet gevonden
bin2m: parancs nem található
bin2m: perintah tidak ditemukan
bin2m: príkaz nenájdený
bin2m: příkaz nenalezen
bin2m: команда не найдена
bin2m: командата не е открита
bin2m: 命令找不到
bin2m: コマンドが見つかりません