pod2docbook: 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/pod2docbook - from package: libpod-2-docbook-perl

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

Error in other languages:
pod2docbook: bevel nie gevind nie
pod2docbook: comandă negăsită
pod2docbook: comando não encontrado
pod2docbook: commande introuvable
pod2docbook: command not found
pod2docbook: käsku ei ole
pod2docbook: không tìm thấy lệnh
pod2docbook: komanda nerasta
pod2docbook: Kommando nicht gefunden.
pod2docbook: kommandot finns inte
pod2docbook: komut yok
pod2docbook: nie znaleziono polecenia
pod2docbook: níor aimsíodh an t-ordú
pod2docbook: no se encontró la orden
pod2docbook: no s'ha trobat l'ordre
pod2docbook: opdracht niet gevonden
pod2docbook: parancs nem található
pod2docbook: perintah tidak ditemukan
pod2docbook: príkaz nenájdený
pod2docbook: příkaz nenalezen
pod2docbook: команда не найдена
pod2docbook: командата не е открита
pod2docbook: 命令找不到
pod2docbook: コマンドが見つかりません