antigenic: 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/antigenic - from package: emboss

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

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