Some of the tools I used under Ubuntu

I am currently using Ubuntu 14.04.

1. Auxiliary Tools Class
   1.1 Display the directory structure in a tree structure: trees.
   Installation method: sudo apt-get install tree
   Call: Tree
   1.2 Universal editing tools (this is actually not enough to call Emacs): GNU Emacs.
   Installation method: sudo apt-get install emacs

2. PDF tool
   2.1 Reading Tools: Okular, better than the system comes with.
   Installation method: sudo apt-get install Okular
   2.2 Editing tools: Master PDF Editor
   : master-pdf-editor-3.2.81 download. Download the Deb file and run the installation directly.

3. Anti-virus software
   3.1 ClamAV.
   Installation method: sudo apt-get install ClamAV
   Virus Database Update command: sudo freshclam
   Scan command: Clamscan. Specific content can be viewed Clamscan--help.
   Graphical interface: Can search CLAMTK installation in Ubuntu Software Center.

4. Image editing tools
   4.1 GIMP. Similar to Photoshop, but this is open source free.
   Installation method: Search for GIMP in Ubuntu Software Center.
   4.2 Kolourpaint. Similar to the Paint tool under Windows.
   Installation method: In Ubuntu Software Center Search kolourpaint installation.

5. Office software
5.1 LibreOffice. Similar to Microsoft Office, but this is open source free.
It is generally installed by default when the operating system is installed.

6. Music software
   6.1 NetEase Cloud Music.
   Installation method: In the NetEase Cloud Music official network has the Linux installation file, the download installs can. To note that ubuntu14.04 can only use the old version, that is, NetEase cloud music 1.0.0 version (can be downloaded into my Baidu cloud disk: NetEase Cloud music 1.0.0). The new version will be installed under Ubuntu16 to run.

Some of the tools I used under Ubuntu