Even After 22 Trillion Digits, We’re Still No Closer To The End Of Pi

By Oliver Roeder Filed under Math Depending on your philosophical views on time and calendars and so on, today is something like the 4.5 billionth Pi Day that Earth has witnessed. But that long history is nothing compared to the infinity of pi itself. A refresher for those of you who have forgotten your seventh-grade math lessons1:… Leer más: Even After 22 Trillion Digits, We’re Still No Closer To… »

User, group, or role already exists in the current database

You moved the database to another instance and created a new login for this database instead of moving the login from the old instance to the new instance. I recommend that you read my article “How To Move Logins To Another Instance(sp_help_revlogin)”. You may receive this error when you want to authorize the login that you created for the database… Leer más: User, group, or role already exists in the current database »

 rsync runs by using a lock file crontab

You can ensure that only one instance of that rsync runs by using a lock file. util-linux includes a file locking wrapper called flock, which you can use in your crontab like so:

NASA’s Kepler Space Telescope discovered an Earth-like planet circling a nearby star within the Goldilocks zone of our galaxy. 

NASA’s Kepler Space Telescope discovered an Earth-like planet circling a nearby star within the Goldilocks zone of our galaxy.  Kepler-186f is around 500 light-years from Earth in the Cygnus constellation. The habitable zone, also identified as the Goldilocks zone, is the area around a star within which planetary-mass objects with enough atmospheric pressure can sustain… Leer más: NASA’s Kepler Space Telescope discovered an Earth-like planet circling a… »

The ‘Allen Computer Organ’, Ralph Deutsch – Allen Organ Co, USA, 1971

The Allen Computer Organ was one of the first commercial digital instruments, developed by Rockwell International (US military technology company) and built by the Allen Organ Co in 1971. The organ used an early form of digital sampling allowing the user to chose pre-set voices or edit and store sounds using an IBM style punch-card system. The… Leer más: The ‘Allen Computer Organ’, Ralph Deutsch – Allen Organ Co,… »