bstyleconvert: 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/bstyleconvert - from package: blackbox

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

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