parsechangelog: 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/parsechangelog - from package: libparse-debianchangelog-perl

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