How to generate a random int in Golang
In Golang there a are two libraries for generating random integers, one is a pseudo-random number generator (package math/rand) and the second one is cryptographically secure random number generator (package crypto/rand)
How to trim whitespace from string in Golang
How to trim (remove) leading and trailing whitespace from string in Golang using the TrimSpace, Trim, TrimLeft, TrimRight methods from strings package.
How to fix apt lock-frontend error in Ubuntu
How to fix the E: Could not get lock /var/lib/dpkg/lock-frontend - open (11: Resource temporarily unavailable) error.
How to get the dimensions of an image in Golang
Here are two simple methods to get the dimensions of an image in Golang: using image.DecodeConfig method if the image is not already loaded and image.Decode method is the image is loaded.
How to change DNS settings from command line
The command line tool used to change the DNS settings is netsh which allows you to configure just about any aspect of your network connections in Windows. In order to use the tool the command line needs to be started as Administrator.
How to change computer's IP address from command line
The command line tool used to change the IP address is netsh which allows you to configure just about any aspect of your network connections in Windows. In order to use the tool the command line needs to be started as Administrator
