betty@betty-net:~$ cd /var/crash 
betty@betty-net:/var/crash$ ls
_usr_bin_do-release-upgrade.0.crash     _usr_sbin_update-apt-xapian-index.0.crash
_usr_bin_do-release-upgrade.0.upload    _usr_sbin_update-apt-xapian-index.0.upload
_usr_bin_do-release-upgrade.0.uploaded  _usr_sbin_update-apt-xapian-index.0.uploaded
_usr_bin_update-manager.1000.crash      _usr_share_software-center_software-center.1000.crash
_usr_bin_update-manager.1000.upload     _usr_share_software-center_update-software-center-agent.1000.crash
_usr_bin_update-manager.1000.uploaded
betty@betty-net:/var/crash$