roscore is not working and cant install pip or rospkg ??

edit

I has frute then I remove it and I downloaded hydro. I followed the steps until I reached to this step:

sudo rosdep init

I got the following error:

Traceback (most recent call last):
 File "/usr/bin/rosdep", line 3, in <module>
from rosdep2.main import rosdep_main
File "/usr/lib/pymodules/python2.7/rosdep2/__init__.py", line 40, in <module>
from .installers import InstallerContext, Installer, \
File "/usr/lib/pymodules/python2.7/rosdep2/installers.py", line 35, in <module>
from rospkg.os_detect import OsDetect
ImportError: No module named rospkg.os_detect

Then I looked for a solution and I did the following:

pip install -U rospkg

I got the following error :

Downloading/unpacking rospkg
Cannot fetch index base URL http://pypi.python.org/simple/
Could not find any downloads that satisfy the requirement rospkg
No distributions at all found for rospkg
Storing complete log in /home/asctec/.pip/pip.log
Traceback (most recent call last):
File "/usr/bin/pip", line 9, in <module>
load_entry_point('pip==1.0', 'console_scripts', 'pip')()
File "/usr/lib/python2.7/dist-packages/pip/__init__.py", line 116, in main
return command.main(initial_args, args[1:], options)
File "/usr/lib/python2.7/dist-packages/pip/basecommand.py", line 147, in main
 log_fp = open_logfile(log_fn, 'w')
 File "/usr/lib/python2.7/dist-packages/pip/basecommand.py", line 176, in open_logfile
 log_fp = open(filename, mode)
IOError: [Errno 13] Permission denied: '/home/asctec/.pip/pip.log'

Also I tried:

sudo pip install --upgrade pip

and I got the following error:

Downloading/unpacking pip
Downloading pip-1.5.6.tar.gz (938Kb): 40Kb downloaded  
Exception:
Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/pip/basecommand.py", line 126, in main
self.run(options, args)
File "/usr/lib/python2.7/dist-packages/pip/commands/install.py", line 223, in run
requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
 File "/usr/lib/python2.7/dist-packages/pip/req.py", line 955, in prepare_files
 self.unpack_url(url, location, self.is_download)
 File "/usr/lib/python2.7/dist-packages/pip/req.py", line 1072, in unpack_url
 return unpack_http_url(link, location, self.download_cache, only_download)
 File "/usr/lib/python2.7/dist-packages/pip/download.py", line 441, in unpack_http_url
 download_hash = _download_url(resp, link, temp_location)
  File "/usr/lib/python2.7/dist-packages/pip/download.py", line 366, in _download_url
 chunk = resp.read(4096)
 File "/usr/lib/python2.7/socket.py", line 380, in read
 data = self._sock.recv(left)
 File "/usr/lib/python2.7/httplib.py", line 561, in read
 s = self.fp.read(amt)
 File "/usr/lib/python2.7/socket.py", line 380, in read
 data = self._sock.recv(left)
 File "/usr/lib/python2.7/ssl.py", line 241, in recv
 return self.read(buflen)
  File "/usr/lib/python2.7/ssl.py", line 160, in read
  return self._sslobj.read(len)
  SSLError: The read operation timed out
 Storing complete log in /home/asctec/.pip/pip.log
 Traceback (most recent call last):
 File "/usr/bin/pip", line 9, in <module>
  load_entry_point('pip==1.0', 'console_scripts', 'pip')()
 File "/usr/lib/python2.7/dist-packages/pip/__init__.py", line ...