bp_generate_histogram: 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/bp_generate_histogram - from package: bioperl

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

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