balance: command not found

Have You tried accessing the binary with the full path?

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/sbin/balance - from package: balance

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

On Debian possible default full paths are:

/usr/bin/balance - from package: balance
/usr/lib/picolisp/bin/balance - from package: picolisp

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