Highlight your prompt on production machines

Append this to your ~/.bashrc:

export PS1='\[\033[01;32m\]\h\[\033[01;34m\] \w\[\033[31m\]$(__git_ps1 "(%s)") \[\033[01;34m\]$\[\033[00m\] '

Reload the changes by saying

source ~/.bashrc

For some customized prompts that also ...

Insert into ~/.bashrc and reload afterwards: source ~/.bashrc

PS1='${debian_chroot:+($debian_chroot)}\[\033[41;33m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '

By convention, common protocols use a defined port, like 80 for HTTP or 443 for HTTPS.

You can use nmap to find out what service is running behind a given port, and most often see some details about it. This can be helpful if servers don't offe...

Luckily, this is simple. Just install three packages:

sudo apt install ipheth-utils libimobiledevice-dev libimobiledevice-utils

Then turn on the "Personal Hotspot" in iPhone settings, connect it to your Ubuntu machine via USB and you sho...

We had a card that described how to install multiple mysql versions using mysql-sandbox. Nowadays with the wide adoption of docker it might be easier to u...

When you include a non-existing Javascript file, you probably won't notice it during development. But with caching active (on production or staging) Rails will write an empty all.js file without complaining.

The shell variable PS1 holds your bash prompt. You might want to change it to serve your needs best. Here is how to:

General

• non-printing escape sequences in your prompt have to be inclosed in \[\e[ and \] so your shell can...

Some folks have started to keep their linux configuration in a git repository called "dotfiles". This sounds like a good idea.

[here are mine](https://github.com/kratob/do...

Note that you should disable the Java plug-in in your browsers after installation.

Ubuntu >= 12.04

Java 11

sudo a...