I use chkrootkit to keep my system clean. I am a new (and happy) Linux user. I use Linux Mint 20.2.
Chkrootkit scan is clean, except few suspicious files as it calls them, which are the following ones :
They are fine. I found this explanation:
“vDSO (virtual dynamically linked shared object) is a Linux kernel mechanism for exporting a carefully selected set of kernel space routines to user space applications so that applications can call these kernel space routines in-process, without incurring the performance penalty of a context switch that is inherent when calling these same kernel space routines by means of the system call interface.”
There is more information here: kernel - What exactly is /lib/modules/4.4.0-XX-generic/vdso/.build-id - Ask Ubuntu
The other files are probably also OK. But note that chrootkit does seem to produce a lot of false positives.
I am not familiar with the software but I would only worry about any definite problem files it complains about.
Thanks Keith, it does help a lot. I still feel funny about the first file (at least on a curiosity level), which is a list of stuff like this (small excerpt, the list is gigantic)…
“attorney”,
“okazaki.aichi.jp”,
“crown”,
“valledaosta.it”,
“tsuiki.fukuoka.jp”,
“fox”,
“tcm.museum”,
… and so so many other lines with some similar apparent nonsense - or at least looks like nonsense to me.
Does anybody have an idea what kind of stuff is this to be in a /lib file??
Thanks again for your patience with a post-Windows newbie.
I found this at https://linux.jangnan.org/dsc/main/tldextract/python3-tldextract/python3-tldextract.html: Python library for separating TLDs
tldextract accurately separates the gTLD or ccTLD (generic or country codetop-level domain) from the registered domain and subdomains of a URL. Bydefault, this package supports the public ICANN TLDs and their exceptions,with optional support for the Public Suffix List’s private domains as well…This package installs the library for Python 3.
Which I take to mean that it’s for sorting out complicated web addresses. the .tld_set_snapshot appears to include the Japan country code “jp” which supports this idea.
Keith, thanks so much. All clear. You also pointed me out to some more resources I can browse for other issues. Much appreciated.
I have just enrolled in a Linux Foundation’s online course, so possibly my ignorance will be dissipated a bit more sometime soon(ish).
Thanks again.
You are most welcome.
I am pleased that you have enrolled on the on-line course and I hope you will give us some feedback about it in the General Discussion board when you are part-way through.
Oh, and would you please edit the title of your first post on this topic by adding [SOLVED] to help others looking for the same explanation.
Thank you.
Keith