Linux – Specify update with apt-get upgrade

aptlinuxupdate

In Ubuntu, the most convenient way to get a system up to date is to call apt-get update followed by apt-get upgrade.
However, on a system that is part of a production environment, it is common practice to test the updates first on an offline system and then apply the very same updates that have been tested on the production system. I wonder if this is possible with apt-get upgrade – is there a way to specify the upgrade in more detail, e.g. by specifying a date until when the upgrade is to be performed?

Best Answer

Once you have tested the upgrades, you can manually upgrade only those specific packages you have tested on the production server with:

apt-get install somepackage=someversion

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Ubuntu – /etc/cron.daily/apt: Segmentation fault

I'm betting your problem stems from insufficient environment variables in that apt script. (eg: $PATH or $LD_LIBRARY_PATH) Essentially, there's a difference between running things via cron and running them in an interactive shell. The latter gets your login environment from places like /etc/profile and ~/.bashrc. Try adding a line or two at the start /etc/cron.daily/apt to import those settings, like so:
. /etc/profile

I'll be totally honest, and point out that I'm not too familiar with Ubunto, so those file locations may not be perfect. If you're using a shell other than Bash, your personal login file may be ~/.profile, or ~/.cshrc, or even something completely different. But the concept is the same.

A related question can be found here.

--Christopher Karel

Ubuntu – apt-get fails with unmet dependencies

I tried using aptitude to resolve the conflicts and it gave me additional information but I ultimately had to remove the various mysql packages and then reinstall them:

apt-get purge mysql-server*
apt-get install mysql-server

I wasn't able to fix the issue without first bringing down the database momentarily...

Best Answer

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Ubuntu – /etc/cron.daily/apt: Segmentation fault

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