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257 lines
9.7 KiB
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257 lines
9.7 KiB
Markdown
Powerline:给 Vim 和 Bash 提供更棒的状态行和提示信息
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=================================================
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Powerline 是一个极棒的 [Vim 编辑器][1]的状态行插件,这个插件是使用 Python 开发的,主要用于显示状态行和提示信息,适用于很多软件,比如 bash、zsh、tmux 等等。
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[
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![Install Powerline Statuslines in Linux](http://www.tecmint.com/wp-content/uploads/2015/10/Install-Powerline-Statuslines-in-Linux-620x297.png)
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][2]
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*Powerline 使 Linux 终端更具威力*
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### 特色
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1. 使用 python 编写,使其更具扩展性且功能丰富
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2. 稳定易测的代码库,兼容 python 2.6+ 和 python 3
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3. 支持多种 Linux 功能及工具的提示和状态栏
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4. 通过 JSON 保存配置和颜色方案
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5. 快速、轻量级,具有后台守护进程支持,提供更佳的性能
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### Powerline 效果截图
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[
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![Powerline Vim Statuslines](http://www.tecmint.com/wp-content/uploads/2015/10/Powerline-Vim-Statuslines.png)
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][3]
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*Vim 中 Powerline 状态行效果*
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在本文中,我会介绍如何安装 Powerline 及其字体,以及如何在 RedHat 和 Debian 类的系统中使 Bash 和 Vim 支持 Powerline。
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### 第一步:准备好安装 Powerline 所需的软件
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由于和其它无关项目之间存在命名冲突,因此 powerline 只能放在 PyPI(Python Package Index)中的 `powerline-status` 包下.
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为了从 PyPI 中安装该包,需要先准备好 `pip`(该工具专门用于 Python 包的管理)工具。所以首先要在 Linux 系统下安装好 `pip` 工具。
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#### 在 Debian、Ubuntu 和 Linux Mint 中安装 pip
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```
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# apt-get install python-pip
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```
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**示例输出:**
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```
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Reading package lists... Done
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Building dependency tree
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Reading state information... Done
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Recommended packages:
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python-dev-all python-wheel
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The following NEW packages will be installed:
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python-pip
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0 upgraded, 1 newly installed, 0 to remove and 533 not upgraded.
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Need to get 97.2 kB of archives.
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After this operation, 477 kB of additional disk space will be used.
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Get:1 http://archive.ubuntu.com/ubuntu/ trusty-updates/universe python-pip all 1.5.4-1ubuntu3 [97.2 kB]
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Fetched 97.2 kB in 1s (73.0 kB/s)
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Selecting previously unselected package python-pip.
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(Reading database ... 216258 files and directories currently installed.)
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Preparing to unpack .../python-pip_1.5.4-1ubuntu3_all.deb ...
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Unpacking python-pip (1.5.4-1ubuntu3) ...
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Processing triggers for man-db (2.6.7.1-1ubuntu1) ...
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Setting up python-pip (1.5.4-1ubuntu3) ...
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```
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#### 在 CentOS、RHEL 和 Fedora 中安装 pip
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在 Fedora 类系统中,需要先打开 [epel 仓库][4],然后按照如下方法安装 pip 包。
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```
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# yum install python-pip
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# dnf install python-pip [Fedora 22+ 以上]
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```
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**示例输出:**
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```
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Installing:
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python-pip noarch 7.1.0-1.el7 epel 1.5 M
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Transaction Summary
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=================================================================================
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Install 1 Package
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Total download size: 1.5 M
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Installed size: 6.6 M
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Is this ok [y/d/N]: y
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Downloading packages:
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python-pip-7.1.0-1.el7.noarch.rpm | 1.5 MB 00:00:01
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Running transaction check
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Running transaction test
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Transaction test succeeded
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Running transaction
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Installing : python-pip-7.1.0-1.el7.noarch 1/1
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Verifying : python-pip-7.1.0-1.el7.noarch 1/1
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Installed:
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python-pip.noarch 0:7.1.0-1.el7
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Complete!
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```
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### 第二步:在 Linux 中安装 Powerline
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现在可以从 Git 仓库中安装 Powerline 的最新开发版。在此之前系统需要安装好 Git 工具以便可以从仓库拉下代码。
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```
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# apt-get install git
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# yum install git
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# dnf install git
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```
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然后你可以通过 `pip` 命令安装 Powerline。
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```
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# pip install git+git://github.com/Lokaltog/powerline
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```
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**示例输出:**
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```
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Cloning git://github.com/Lokaltog/powerline to /tmp/pip-WAlznH-build
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Running setup.py (path:/tmp/pip-WAlznH-build/setup.py) egg_info for package from git+git://github.com/Lokaltog/powerline
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warning: no previously-included files matching '*.pyc' found under directory 'powerline/bindings'
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warning: no previously-included files matching '*.pyo' found under directory 'powerline/bindings'
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Installing collected packages: powerline-status
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Found existing installation: powerline-status 2.2
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Uninstalling powerline-status:
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Successfully uninstalled powerline-status
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Running setup.py install for powerline-status
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warning: no previously-included files matching '*.pyc' found under directory 'powerline/bindings'
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warning: no previously-included files matching '*.pyo' found under directory 'powerline/bindings'
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changing mode of build/scripts-2.7/powerline-lint from 644 to 755
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changing mode of build/scripts-2.7/powerline-daemon from 644 to 755
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changing mode of build/scripts-2.7/powerline-render from 644 to 755
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changing mode of build/scripts-2.7/powerline-config from 644 to 755
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changing mode of /usr/local/bin/powerline-config to 755
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changing mode of /usr/local/bin/powerline-lint to 755
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changing mode of /usr/local/bin/powerline-render to 755
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changing mode of /usr/local/bin/powerline-daemon to 755
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Successfully installed powerline-status
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Cleaning up...
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```
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### 第三步:在 Linux 中安装 Powerline 的字体
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Powerline 使用特殊的符号来为开发者显示特殊的箭头效果和符号内容。因此你的系统中必须要有符号字体或者补丁过的字体。
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通过下面的 [wget][5] 命令下载最新的系统字体及字体配置文件。
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```
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# wget https://github.com/powerline/powerline/raw/develop/font/PowerlineSymbols.otf
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# wget https://github.com/powerline/powerline/raw/develop/font/10-powerline-symbols.conf
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```
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然后你将下载的字体放到字体目录下 `/usr/share/fonts` 或者 `/usr/local/share/fonts`,或者你可以通过 `xset q` 命令找到一个有效的字体目录。
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```
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# mv PowerlineSymbols.otf /usr/share/fonts/
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```
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接下来你需要通过如下命令更新你系统的字体缓存。
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```
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# fc-cache -vf /usr/share/fonts/
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```
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其次安装字体配置文件。
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```
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# mv 10-powerline-symbols.conf /etc/fonts/conf.d/
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```
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注意:如果相应的符号没有出现,可以尝试关闭终端会话并重启 X window,这样就会生效了。
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### 第四步:给 Bash Shell 和 Vim 状态行设置 Powerline
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在这一节将介绍 bash shell 和 vim 编辑器中关于 Powerline 的配置。首先通过在 `~/.bashrc` 中添加如下内容以便设置终端为 256 色。
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```
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export TERM="screen-256color"
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```
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#### 打开 Bash Shell 中的 Powerline
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如果希望在 bash shell 中默认打开 Powerline,可以在 `~/.bashrc` 中添加如下内容。
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首先通过如下命令获取 powerline 的安装位置。
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```
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# pip show powerline-status
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Name: powerline-status
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Version: 2.2.dev9999-git.aa33599e3fb363ab7f2744ce95b7c6465eef7f08
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Location: /usr/local/lib/python2.7/dist-packages
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Requires:
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```
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一旦找到 powerline 的具体位置后,根据你系统的情况替换到下列行中的 `/usr/local/lib/python2.7/dist-packages` 对应的位置。
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```
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powerline-daemon -q
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POWERLINE_BASH_CONTINUATION=1
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POWERLINE_BASH_SELECT=1
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. /usr/local/lib/python2.7/dist-packages/powerline/bindings/bash/powerline.sh
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```
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然后退出后重新登录,现在 powerline 的状态行应该如下显示了。
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[
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![Bash Powerline Statuslines](http://www.tecmint.com/wp-content/uploads/2015/10/Bash-Powerline-Statuslines.gif)
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][6]
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现在切换目录并注意显示你当前路径的面包屑导航提示的变化。
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如果远程 Linux 服务器上安装了 powerline,你能看到后台挂起的任务,当你用 ssh 登录上去时,会看到该提示增加了主机名。
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#### 在 Vim 中打开 Powerline
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如果你喜欢使用 vim,正好有一个 vim 的强力插件。可以在 `~/.vimrc` 中添加如下内容打开该插件(LCTT 译注:注意同样需要根据你的系统情况修改路径)。
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```
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set rtp+=/usr/local/lib/python2.7/dist-packages/powerline/bindings/vim/
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set laststatus=2
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set t_Co=256
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```
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然后你打开 vim 后会看到一个新的状态行:
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[
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![Vim Powerline Statuslines](http://www.tecmint.com/wp-content/uploads/2015/10/Vim-Powerline-Statuslines.gif)
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][7]
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### 总结
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Powerline 可以在某些软件中提供颜色鲜艳、很优美的状态行及提示内容,这对编程环境有利。希望这篇指南对您有帮助,如果您需要帮助或者有任何好的想法,请留言给我。
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--------------------------------------------------------------------------------
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作者简介:
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![](http://1.gravatar.com/avatar/7badddbc53297b2e8ed7011cf45df0c0?s=128&d=blank&r=g)
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我是Ravi Saive,TecMint的作者。一个喜欢分享诀窍和想法的电脑极客及Linux专家。我的大部分服务都运行在开源平台Linux中。关注我的Twitter,Facebook和Google+。
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--------------------------------------------------------------------------------
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via: http://www.tecmint.com/powerline-adds-powerful-statuslines-and-prompts-to-vim-and-bash/
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作者:[Ravi Saive][a]
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译者:[beyondworld](https://github.com/beyondworld)
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校对:[wxy](https://github.com/wxy)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译,[Linux中国](https://linux.cn/) 荣誉推出
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[a]:http://www.tecmint.com/author/admin/
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[1]:http://www.tecmint.com/vi-editor-usage/
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[2]:http://www.tecmint.com/wp-content/uploads/2015/10/Install-Powerline-Statuslines-in-Linux.png
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[3]:http://www.tecmint.com/wp-content/uploads/2015/10/Powerline-Vim-Statuslines.png
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[4]:https://linux.cn/article-2324-1.html
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[5]:http://www.tecmint.com/10-wget-command-examples-in-linux/
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[6]:http://www.tecmint.com/wp-content/uploads/2015/10/Bash-Powerline-Statuslines.gif
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[7]:http://www.tecmint.com/wp-content/uploads/2015/10/Vim-Powerline-Statuslines.gif
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