A fascinating data visualization video. Having lived in many countries, including Mainland China, I can attest that the data in this video are most likely true.
Most Popular Instant Messengers 1997 - 2019
youtube.com/watch?v=KbWfzyQBWr

Apple strong-arms entire CA industry into one-year certificate lifespans
Apple, Google, and Mozilla reduce the lifespan for HTTPS certificates to 398 days, against the wishes of Certificate Authorities.
zd.net/3icBiK4

I've been hosting my own email on one of my sites for a while, and using various mail services like Zoho to host other sites. Below is a good read.
Why build your own mail server instead of outsourcing to external entities
bit.ly/31mG15P

Converting between binary and decimal in is easy.
To convert from to do something like:
Where x is any integer >= 0
parseInt(x,10).toString(2)

From binary to decimal do something like:
Where x is any binary num. >= 0
parseInt(x,2).toString(10)

Today, I reviewed range addresses, which are very useful in . If you want to apply search and replace on a range of lines, it may look like the following, if you wanted to go from line 10 to the last line replacing everything after # with "".
sed -i -e '10,$ s/#.*$//' file

I've been spending a lot of time recently revamping this site, moving it to a new VPS, and editing old articles. In the coming days and weeks, this site will have many things improved.
linuxwebdevelopment.com/

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