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Today I've had a look at the Slackware security advisories, and decided to upgrade libpng and git.
My doubt is, should I install the new package without removing the old one, or should I remove the old one first?
For example, I've installed the new libpng, now I have both libpng-1.2.27 and 1.2.35.
I'm not sure if I should uninstall the old version, since some programs might be using its shared library. On the other hand, should I worry about disk space usage by old packages?
Thanks to everyone.
Actually, I rarely use precompiled packages, I usually compile libraries and application from source. This is why I'm afraid that some compiled stuff might still depend on the old version of the library. However, I realize that keeping the old libraries makes the upgrade useless...
Edit: anyway, for git, I think there should be no problem if I overwrite the existing installation (maybe I could have trouble if I used GUI for git, but I don't).