adjust_seq_orientation.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/adjust_seq_orientation.py - from package: qiime

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

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