perl2html: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH

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/perl2html - from package: libpod-tree-perl

You may install the required package with command apt-get install {package}
Error in other languages:
perl2html: bevel nie gevind nie
perl2html: comandă negăsită
perl2html: comando não encontrado
perl2html: commande introuvable
perl2html: command not found
perl2html: käsku ei ole
perl2html: không tìm thấy lệnh
perl2html: komanda nerasta
perl2html: Kommando nicht gefunden.
perl2html: kommandot finns inte
perl2html: komut yok
perl2html: nie znaleziono polecenia
perl2html: níor aimsíodh an t-ordú
perl2html: no se encontró la orden
perl2html: no s'ha trobat l'ordre
perl2html: opdracht niet gevonden
perl2html: parancs nem található
perl2html: perintah tidak ditemukan
perl2html: príkaz nenájdený
perl2html: příkaz nenalezen
perl2html: команда не найдена
perl2html: командата не е открита
perl2html: 命令找不到
perl2html: コマンドが見つかりません