Shell 终端文件对比高亮显示

    日常开发当中，团队协作就要涉及到代码版本的管理，代码版本不断的变化，项目合并时通常会比较同一代码不同版本之间具体发生了哪些变化?还有常在shell终端开发下的我们对比文件我们又通常会用到一些对比的命令，无论是linux的对比命令还是代码版本管理的对比，输出的对比文本大都比较朴素，如果差异小还好，如果差异大简直要崩溃，刚好看到一个小工具，也从网上查了些相关资料，觉的是一个实用的小工具，在此分享给大家。

• ColorDiff 介绍
• ColorDiff 安装
• ColorDiff 不同场景下运用

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ColorDiff 介绍

    colordiff 是perl 开发一款小工具，与diff 功能一样，但其拥有漂亮的语法和高亮差异显示。小巧轻便又可以定制颜色方案。colordiff 适用于 Linux 及 BSD 系统，目前已被包含到 Debian、Ubuntu、Gentoo、Arch Linux、Fedora、FreeBSD 等发行版中。—— 【官方网站】

ColorDiff 安装

以下简单针对几个系统做下介绍:

• Mac 系统
  安装方式

    brew install colordiff

• Ubuntu

    apt-get install colordiff

• Centos

    yum install colordiff

    或者手动安装，因软件本身很小巧，安装也很简单，将下载到的源码包解压后，直接进行目录中执行”make install”即可,程序和配置文件分别默认安装在/usr/local/bin和/etc目录下

    wget http://www.colordiff.org/colordiff-1.0.16.tar.gz
    tar -zxvf colordiff-1.0.16.tar.gz
    cd colordiff-1.0.16
    make install

ColorDiff 不同场景下的运用

• 文件对比
  对比linux 下两文件内容的差异:

    colordiff file1 file2

• 配合diff 命令
  ColorDiff用于diff命令的管道输出:

    diff -u file1 file2 | colordiff

• 配合svn diff
  在 ~/.subversion/config 內修改:
  [helpers]
  diff-cmd = colordiff

如果需要修改颜色：sudo vim /usr/local/etc/colordiffrc

[helpers]
49 ### Set editor-cmd to the command used to invoke your text editor.
50 ### This will override the environment variables that Subversion
51 ### examines by default to find this information ($EDITOR, 
52 ### et al).
53 # editor-cmd = editor (vi, emacs, notepad, etc.)
54 ### Set diff-cmd to the absolute path of your 'diff' program.
55 ### This will override the compile-time default, which is to use
56 ### Subversion's internal diff implementation.
57 # diff-cmd = diff_program (diff, gdiff, etc.)
58 ### Set diff3-cmd to the absolute path of your 'diff3' program.
59 ### This will override the compile-time default, which is to use
60 ### Subversion's internal diff3 implementation.
61 # diff3-cmd = diff3_program (diff3, gdiff3, etc.)
62 ### Set diff3-has-program-arg to 'yes' if your 'diff3' program
63 ### accepts the '--diff-program' option.
64 # diff3-has-program-arg = [yes | no]
65 ### Set merge-tool-cmd to the command used to invoke your external
66 ### merging tool of choice. Subversion will pass 4 arguments to
67 ### the specified command: base theirs mine merged
68 # merge-tool-cmd = merge_command
69 diff-cmd = colordiff
70 ### Section for configuring tunnel agents.