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我的Ubuntu 12.10之下，我已经安装了这个混帐提示感知：https://github.com/jimeh/git-aware-prompt在Ubuntu下的Git分支提示不工作
每当我在其中有一个Git仓库的目录，我需要做的源~/.bash_profile显示分支。如果我不这样做，它不会显示出来。但是，当我关闭终端并转到同一个目录时，我需要再次执行~/.bash_profile，为什么会发生这种情况？
我的问题是，在我的.bashrc已经定义PS1为：
case "$TERM" in
xterm-color) color_prompt=yes;;
esac
# uncomment for a colored prompt, if the terminal has the capability; turned
# off by default to not distract the user: the focus in a terminal window
# should be on the output of commands, not on the prompt
force_color_prompt=yes
if [ -n "$force_color_prompt" ]; then
if [ -x /usr/bin/tput ] && tput setaf 1 >&/dev/null; then
# We have color support; assume it's compliant with Ecma-48
# (ISO/IEC-6429). (Lack of such support is extremely rare, and such
# a case would tend to support setf rather than setaf.)
color_prompt=yes
else
color_prompt=
fi
fi
if [ "$color_prompt" = yes ]; then
PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\[email protected]\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '
else
PS1='${debian_chroot:+($debian_chroot)}\[email protected]\h:\w\$ '
fi
unset color_prompt force_color_prompt
# If this is an xterm set the title to [email protected]:dir
case "$TERM" in
xterm*|rxvt*)
PS1="\[\e]0;${debian_chroot:+($debian_chroot)}\[email protected]\h: \w\a\]$PS1"
;;
*)
;;
esac
这将覆盖我在.bash_profile文件：
export GITAWAREPROMPT=~/.bash/git-aware-prompt
source $GITAWAREPROMPT/main.sh
export PS1="\[email protected]\h \w\[$txtcyn\]\$git_branch\[$txtylw\]\$git_dirty\[$txtrst\]\$ "
我怎样才能将这些PS1的两设置？