1. Open /etc/apt/sources.list and add the following line to the end.

   deb http://www.backports.org/debian jessie-backports main contrib non-free
   

   or

   deb http://ftp.us.debian.org/debian/ jessie-backports main contrib non-free
   deb-src http://ftp.us.debian.org/debian/ jessie-backports main contrib non-free
   

2. Make sure the GPG …

1. First use diskutil list to list all avaiable disks and identifiy the external hard drive to mount. For example, running diskutil list on my Mac gives me the following output and /dev/disk2s1 is the partition (NTFS) to mount.

   $ diskutil list
   /dev/disk0 (internal):
      #:                       TYPE NAME                    SIZE       IDENTIFIER
      0:      GUID_partition_scheme …

My Windows PC in my office slows down signficantly after running for several days. I have cleaned up the startup applications to the most I can. The only way I can think of is to automatically restart the computer early morning every few days. The article [Windows10] How to set …

1. mktemp is preferred to tempfile.

It is recommended that you use pip to install Python packages.

1. If you don't already know the proxy in use (in your company), read the post Find out Proxy in Use to figure it out.

2. Set proxy environment variables.

   set http_proxy=http://user:password@proxy_ip:port
   set https_proxy=https://user …

Tips and Traps

1. Almost all sychronization tools have problems with symbolic links. Most of them just ignore symbolic links. This makes sense as following symbolic links can causes serious disk problems. If not followed then symbolic links are likely broken on other device. The simple suggestion is do not place …