exclude_seqs_by_blast.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/exclude_seqs_by_blast.py - from package: qiime

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

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