My custom bash prompt. It shows the branch and removes the machine name in the color version.

branch-bashrc.sh

# Usage:
# In your ~/.bashrc file, first look for the
# "unset color_prompt force_color_prompt" line
# and disable it by commenting it.
# Then, paste this code at the end of the file
# (or anywhere below the line you just commented).

PS1=''
parse_git_branch() {
 git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/ \1 /'
}
if [ "$color_prompt" = yes ]; then
 PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u \[\033[01;34m\]\w\[\033[01;31m\]$(parse_git_branch)\[\033[00m\]\$ '
else
 PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w$(parse_git_branch)\$ '
fi
unset color_prompt force_color_prompt