Tag Archives: Linux

Add GIT branch information to Bash prompt

I’ve seen such as fancy Bash prompts on various tutorials and Linux examples over the Internet and I’ve always wondered how is achieved. I never really had a enough free time to learn more about it and explore the options. But being jobless for a month gave me opportunity to play with the thinks I like 🙂

My solution is pretty simple: when you navigate to git controlled folder, the bash prompt will show “@ branch” after the directory name. Nothing fancy.

Just open your ~/.bashrc configuration file with your favorite editor and add the following:

get_git_branch () {
git name-rev HEAD 2> /dev/null | sed "s/[a-zA-Z0-9]\+\ \(.*\)/ @ \1/"
}

than put this into your PS1 string:

$(get_git_branch)

so it become something like that

PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w$(parse_git_branch) \n\$\[\033[00m\] '

Restart your terminal or type bash to start new bash session. Navigate to git controlled folder to test. It should look like this:

bash-git

How to create user without useradd command in OpenWRT

There is no useradd command in OpenWRT. Instead, shadow user package is available but I found it overkill. Anyway, if you are interested in using it – check out this tutorial,
Follow these steps to create a user without using useradd command in OpenWRT. Continue reading “How to create user without useradd command in OpenWRT” »

How To Get The Log Instead of Just Revision Numbers by svn merge info

svn merge command is really great – it can be used to determine which revisions are already merged and which are eligible to merge from particular branch. But has one big drawback – it can output just the revision numbers, but not the corresponding log messages. So, it’s really hard to determine what has been commited actually with these revisions. Of course, you can run svn log command for the revisions in question, but what if there are, lets say, 50 commits?

You could build a list of commit messages by piping mergeinfo into the svn log command using xargs. It looks like this:

svn mergeinfo --show-revs=eligible ^/branches/version | tr "\\n" "," | xargs -i svn log -c {} ^/branches/version

To make the command little bit easier and shorter, you may consider to add an alias in your ~/.bash_aliases file as follow:

alias svnlog='tr "\\n" "," | xargs -i svn log -c {}'

Now, you can shorten the command like that:

svn mergeinfo --show-revs=eligible ^/branches/version | svnlog ^/branches/version

How to setup the perfect LAMP stack on Ubuntu 14.04 LTS

Ok, ladies and gentlemen!

I needed local development server closer as possible to the production one. I downloaded and Installed Ubuntu, but didn’t know how to get Apache, MySQL and PHP installed. After a few hours of reading random blogs found on Google and head banging I succeed.

My requirements was:

  1. Set up multiple subdomains automatically (i.e. Virtual Document Root)
  2. Password protect all my subdomains when they are accessed outside my home network but access them directly, without need to provide password, when I am connected to my local network and develop.
  3. To separate the error logs by virtual host (subdomain).

Below is a laundry list of commands to help you configure your own perfect Ubuntu server, too.

Continue reading “How to setup the perfect LAMP stack on Ubuntu 14.04 LTS” »