ubuntu配置终端路径显示为只有一个>

if [ "$color_prompt" = yes ]; then
PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '
else
PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
fi

if [ "$color_prompt" = yes ]; then
PS1='\[\e]2;\u@\H \w\a\e[32;1m\]>\[\e[0m\] '
else
PS1='\[\e]2;\u@\H \w\a\e[32;1m\]>\[\e[0m\] '
fi

PS1='\[\e]2;\u@\H \w\a\e[32;1m\]>\[\e[0m\] '