dollop: 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/dollop - from package: phylip

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

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