bp_heterogeneity_test: 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_heterogeneity_test - from package: bioperl

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

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