FREEBSD - USING SILK
Hi ! When we talk about seeing things, it is tempting to imagine the presence of images, but this is not always the case. Take the network, for example, knowing what’s happening at the data level involves capturing that data and analyzing it.
FREEBSD - CONVERTING IMAGES TO PDF
Hi ! I recently had a request to: Produce PDF documents from various images (5) in JPEG format; Make a single PDF file from the 5 small PDF files. My server at home is FreeBSD (yes, I use and abuse of “JAILS”) so let’s look at the software needed for the maneuver.
R - MAKING A SIMPLE TREEMAP
Hi ! I think you have understood that I find a representation of data in the form of a treemap very good.
GAWK - DEALING WITH NESTED COMMAS
A few posts ago, I was echoing the possible presence of nested commas in CSV file fields.
ZEEK - ADDING GEOIP TO 'CONN.LOG'
Since I’m a fan of seeing things, why not identify where the network connections are coming from. In the previous post, I talked about one of the strengths of Zeek which is the availability of packages. Precisely in the case that interests us, we will use the one named “geoip-conn”.
ZEEK - REPOSITORY FOR PACKAGES
Zeek is a very good tool for analyzing network flows and one of its great strengths is, in my opinion, the fact that it is possible to easily adapt it to your environment.
R - CSV FILE WITH COMMAS EMBEDDED IN FIELDS
In the previous post, I compared the execution speed of two R functions: “readlines()” vs “read.csv()”. The second being the slowest in the case I was dealing with. However, I just found a utility to use the latest.
R - READ.CSV() OR READLINES() ?
Let’s compare the execution speed of two functions. To make some treemaps,I use informations from the following link: https://github.com/ccodwg/CovidTimelineCanada/blob/main/data/hr/cases_hr.csv
ZEEK ?
Zeek is a perfect tool for those who wish to have very good visibility on what is happening at the network level. We will talk in later posts about various uses of this very good tool. In the meantime, you can go to https://zeek.org to learn more about it.
A PROPOS, WHAT ABOUT ?
This blog will report on different things mainly focused on IT:
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