1.安装tldr报错
（1）报错详情：
[[email protected] ~]# pip install tldr Collecting tldr Downloading https://files.pythonhosted.org/packages/ff/bb/0870bf90ad1137172b3cc0758d18e99fd2325243139e0bb7652556c77e0e/tldr-0.5.tar.gz Complete output from command python setup.py egg_info: /usr/lib64/python2.7/distutils/dist.py:267: UserWarning: Unknown distribution option: ‘long_description_markdown_filename‘ warnings.warn(msg) Traceback (most recent call last): File "<string>", line 1, in <module> File "/tmp/pip-build-ZBdOo2/tldr/setup.py", line 39, in <module> "Topic :: System" File "/usr/lib64/python2.7/distutils/core.py", line 112, in setup _setup_distribution = dist = klass(attrs) File "/usr/lib/python2.7/site-packages/setuptools/dist.py", line 269, in __init__ _Distribution.__init__(self,attrs) File "/usr/lib64/python2.7/distutils/dist.py", line 287, in __init__ self.finalize_options() File "/usr/lib/python2.7/site-packages/setuptools/dist.py", line 302, in finalize_options ep.load()(self, ep.name, value) File "/tmp/pip-build-ZBdOo2/tldr/setuptools_scm-3.3.3-py2.7.egg/setuptools_scm/integration.py", line 9, in version_keyword File "/tmp/pip-build-ZBdOo2/tldr/setuptools_scm-3.3.3-py2.7.egg/setuptools_scm/version.py", line 66, in _warn_if_setuptools_outdated setuptools_scm.version.SetuptoolsOutdatedWarning: your setuptools is too old (<12) ---------------------------------------- Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-ZBdOo2/tldr/ You are using pip version 8.1.2, however version 19.2.3 is available. You should consider upgrading via the ‘pip install --upgrade pip‘ command.
（2）解决办法：
pip install --upgrade setuptools
（3）重新安装 pip install tldr
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