protdist: 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/phylip/bin/protdist - from package: phylip

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

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