Whether you installed Golang from Ubuntu official repositories or the Golang backports PPA and you simultaneously installed multiple versions (eg. golang-1.20, golang-1.21, ...), it can be a bit difficult to use them since, technically,…
I was really surprised that a rather large amount of online tutorials or comments post code similar to this: dir=$(dirname $0) or dir=$(dirname $(readlink -f $0)). On the surface, this code looks good,…
Sometimes you may need to know your public IPv4 address. If you have an open browser window you may go to https://www.whatismyip.com/ or to http://canihazip.com/. However, I prefer the latter…
In the context of a command line interpreter, clobbering means overwriting the contents of a file using shell redirection (using the > and >> operators). This is sometimes useful, sometimes catastrophic. By default, the…