add some practise files about description and class
add two files about the socket modlue from python lib reference 17.2.2
change host name as my computer
modify the files for pylib_17_2_2_client.py regarding to socket
add practise files for 16-6 of core python programming
Merge remote-tracking branch 'origin'
complete and run the socket exercise in ch16 of core programming python
change some hardcoded value into vars
in Download_multi
change hardcoded values into vars
delete some unuseful files
clean up some files
remove some files
fixed some issue download_multi.py
add linux shell folder for linux shell practice
add the moldflow book files
add ldap.py from shacng83106mb
add some shell scripts
save modifications of 16_6_client.py
update the download scrip for valvagate build
Merge remote-tracking branch 'origin/master'