I experimenting with Linux namespaces on Ubuntu 17.1 distro. Ultimate goal is to force an application to use a particular network interface via a 3G modem not the intranet wired connection. My PC h...

上了年纪，记性不好，用到的就记下来了 （1）大、小端序的由来（只是说一下大、小端名字的由来 摘自<深入理解计算机系统第三版>） 术语“little endian(小端)”和“big endian(大端)”出自Jonathan Swift的…

part of a number in scientific notation: e.g. the “1.2345” in “1.2345×10²”

I'm doing some basic sql on a few tables I have, using a union(rightly or wrongly)

but I need remove the duplicates. Any ideas?

select * from calls
left join users a on calls.assigned_to= a.user_id

Docker image for PostGIS. Contribute to postgis/docker-postgis development by creating an account on GitHub.

Docker CLI plugin for extended build capabilities with BuildKit - docker/buildx

Can't create tables in public schema as non-superuser
postgres - super user.
What I've done:
ALTER SCHEMA public owner to postgres;

CREATE USER admin WITH PASSWORD 'my-password';

GRANT USAGE,

I'm playing around, and trying to streamline/harden my tty login prompt to display a minimum of system information. I modified my /etc/issue and /etc/motd to be empty, and touched ~/.hushlogin. That

For the sake of learning, I wanted to start a new terminal (let's say tty10) from the command prompt. I know I can just run sudo systemctl start [email protected], but I want to run it manually f...

One can use the command docker system df (mirror) (introduced in Docker 1.13.0) to see docker disk usage, e.g.:

username@server:~$ docker system df
TYPE TOTAL ACTIVE ...