genbrk: 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/genbrk - from package: icu

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

On Debian possible default full paths are:

/usr/bin/genbrk - from package: icu-devtools

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

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