Running cache clearing procedure from upgrade 4.2.0 using root removes all linux system files

root@INTRANET intradev]# php update/common/scripts/4.2/fixorphanimages.php
This script will delete images that look orphan
Press ctrl-c in the next 10 seconds to prevent the script from starting...
Looking for obsolete image files...
1164 / 1164 [=======================================================>] 100.00%
[root@INTRANET intradev]# php bin/php/ezcache.php --clear-all --purge
Purging : Cache d'affichage de contenu, Cache Global INI, Cache INI, Cache codepage,
Cache des identifiants de classes, Cache des clés de classement, Cache des alias d'URL,
Cacher de transformation des caractères, Alias d'image, Cache des templates, Cache des
template block, Cache des templates override, Cache des textes convertis en imagePHP
Fatal error:  Allowed memory size of 16777216 bytes exhausted (tried to allocate 262144 bytes)
in /var/www/html/intradev/kernel/classes/clusterfilehandlers/ezfsfilehandler.php on line 862
Fatal error: eZ Publish did not finish its request
The execution of eZ Publish was abruptly ended, the debug output is present below.
[root@INTRANET intradev]# php bin/php/ezcache.php --clear-all --purge
bash: /usr/bin/php: Aucun fichier ou répertoire de ce type