helixturnhelix: 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/helixturnhelix - from package: emboss

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

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