Author Archives: admin

md5sum for files in the directory

Here is nice one line solution to generate list of md5sums: ls *.py | while read f;do md5sum $f;done > /tmp/list1.md5sums Or oneliner for subdirectory tree: find . -name “*.py” | while read f;do md5sum $f;done

Posted in workday | Leave a comment

Charter 6rd configuration

It’s good to know, that Internet Service Provider CHARTER is getting ready for IPv6. There is a trial program, and here is working Linux configuration: #edit /etc/config/network #/etc/init.d/network reload config interface ‘wan6’ option proto ‘6rd’ option peeraddr ‘68.114.165.1’ option ip6prefix … Continue reading

Posted in workday | Leave a comment

Ethernet cables

With improving internet infrastructure, higher speeds are now possible. In case of gigabits per second speed one needs to pay attention to the ethernet cable. Better to choose Cat 5e or even Cat 6. There is nice article What Kind … Continue reading

Posted in workday | Leave a comment

SSH port tunneling

Let’s say, a user1 has a ssh connection to the ssh.exampleserver.com, and he would like to view a webpage on intranet server 10.0.0.11 available from exampleserver. Then command could be like this: ssh -L 8000:10.0.0.11:80 user1@ssh.exampleserver.com If using Putty, one … Continue reading

Posted in workday | Leave a comment

Gigasecond

One gigasecond is: 1,000,000,000 seconds 11574.074 days (1 day is 84,600 seconds) 31.688738506811430964562103462971 gregorian years (365.2425 days) 2 Gs = 63.377477013622861929124206925941 gregorian years 3 Gs = 95.066215520434292893686310388913 gregorian years 4 Gs = 126.75495402724572385824841385188 gregorian years

Posted in workday | Leave a comment

Institute for the Future

The Institute for the Future is is a 501(c)3 nonprofit corporation founded in 1968 by a group of former RAND Corporation researchers with a grant from the Ford Foundation to take leading-edge research methodologies into the public and business sectors. … Continue reading

Posted in workday | Leave a comment

Remote desktop over VPN

Having work on Windows Remote Desktop over VPN and cell phone network, it was an opportunity to check how much bandwidth one could use. Probably it would depend how many screen is user flipping through, but answer is about 1 … Continue reading

Posted in workday | Leave a comment

RESTfull web

REST is acronym for Representational state transfer. It was defined in 2000 by Roy Fielding in his doctoral dissertation. System conforming REST constraints can be called RESTful and most the time is using protocol HTTP utilizing its methods GET, POST, … Continue reading

Posted in RRR | Leave a comment

Typescript in jEdit

Java based editor jEdit allows to syntax highlight plethora of languages and their file extensions. Adding typescript highlighting can be as simple as exiting file jEdit/modes/catalog. One can take advantage of the fact, that the typescript is an extension of … Continue reading

Posted in workday | Leave a comment

Borrelia mayonii

More to worry about ticks in Minnesota, as The New York Times reports about new species spreading Lyme diseases: Borrelia mayonii, discovered at Mayo Clinic, Rochester MN. Borrelia mayonii in a laboratory dish. Credit: Mayo Foundation for Medical Education and … Continue reading

Posted in workday | Leave a comment