apt-get -sy upgrade

apt-get clean #Ungenutzte Pakete entfernen
apt-get autoclean #Ungenutzte Pakete entfernen

#problem with apt-get update under ubuntu
-> resolution:
The fix is just to back up sources.list, delete everything in it and run "apt-get update".
After the update replace sources.list with the backup and run "apt-get update" again. You should not get the error then.

-> another resolution:
sudo apt-get update -o Acquire::http::No-Cache=True
sudo apt-get update -o Acquire::BrokenProxy=true

RPM update von libraries:
To add the new library to the shared library cache you have to run
ldconfig(8) as root. Additionally every program that is linked with
libmcrypt needs to be restarted. ldd(1) can be used to find out which
libraries are used by a program.

Another way to determine which process uses a shared library that
had been deleted is:
lsof -n 2>/dev/null | grep RPMDELETE | cut -d " " -f 1 | sort | uniq

lsof - list open files

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