bp_dbsplit: 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 Debian possible default full paths are:

/usr/bin/bp_dbsplit - from package: bioperl

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