core_diversity_analyses.py: 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/lib/qiime/bin/core_diversity_analyses.py - from package: qiime

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

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