whups-git-hook-conf.php.dist: 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/whups-git-hook-conf.php.dist - from package: php-horde-whups

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

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