bp_classify_hits_kingdom: 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_classify_hits_kingdom - from package: bioperl

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

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