phylip: 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/phylip - from package: phylip

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

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