theseus_align: 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/theseus_align - from package: theseus

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

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