格物致知

I was stuck with a systemd problem today, so I went to Github to raise the issue, but they said the version was too old, and asked me to upgrade the version first, so I decided to upgrade systemd to prove that it was.

Because the version of gcc that comes with CentOS is too old, some new code can not be compiled (does not support C14/17?), so I have no choice but to toss and upgrade the gcc, this article will record my upgrade process.

It's been a while since I've had to look at and use SNMP for work, and since SNMP is an infrequently used knowledge, it's easy to forget things, so there are some basics that I feel like I can pull out and make a memo so I can review them later.