yumは何で作られている？調べてみた。

2016/07/14

yumって何の言語で記述されているのだろうか？調べてみた。 (CentOS6.7)

# which yum
/usr/bin/yum

#!/usr/bin/python
import sys
try:
    import yum
except ImportError:
    print >> sys.stderr, """\
There was a problem importing one of the Python modules
required to run yum. The error leading to this problem was:

   %s

Please install a package which provides this module, or
verify that the module is installed correctly.

It's possible that the above module doesn't match the
current version of Python, which is:
%s

If you cannot solve this problem yourself, please go to
the yum faq at:
  http://yum.baseurl.org/wiki/Faq

""" % (sys.exc_value, sys.version)
    sys.exit(1)

sys.path.insert(0, '/usr/share/yum-cli')
try:
    import yummain
    yummain.user_main(sys.argv[1:], exit_code=True)
except KeyboardInterrupt, e:
    print >> sys.stderr, "\n\nExiting on user cancel."
    sys.exit(1)

pythonで書かれている！ pythonのインストールでpython壊してしまい、/usr/bin/pythonが無いので、yumも当然エラー発生。

# yum
-bash: /usr/bin/yum: /usr/bin/python: bad interpreter: No such file or directory


# /usr/bin/python
-bash: /usr/bin/python: No such file or directory

CentOSにデフォルトで入っているpythonは壊さないようにしましょう…