fba2cfba: 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/fba2cfba - from package: hercules

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

On Debian possible default full paths are:

/usr/bin/fba2cfba - from package: hercules

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

Error in other languages:
fba2cfba: bevel nie gevind nie
fba2cfba: comandă negăsită
fba2cfba: comando não encontrado
fba2cfba: commande introuvable
fba2cfba: command not found
fba2cfba: käsku ei ole
fba2cfba: không tìm thấy lệnh
fba2cfba: komanda nerasta
fba2cfba: Kommando nicht gefunden.
fba2cfba: kommandot finns inte
fba2cfba: komut yok
fba2cfba: nie znaleziono polecenia
fba2cfba: níor aimsíodh an t-ordú
fba2cfba: no se encontró la orden
fba2cfba: no s'ha trobat l'ordre
fba2cfba: opdracht niet gevonden
fba2cfba: parancs nem található
fba2cfba: perintah tidak ditemukan
fba2cfba: príkaz nenájdený
fba2cfba: příkaz nenalezen
fba2cfba: команда не найдена
fba2cfba: командата не е открита
fba2cfba: 命令找不到
fba2cfba: コマンドが見つかりません