Category Archives: unix-linux

Install Qt5.7 binary on Ubuntu 16.04

Run

sudo add-apt-repository -y ppa:beineri/opt-qt57-xenial
sudo apt update
sudo apt install qt-latest

How to use xRDP for remote access to Ubuntu

Since the current desktop manager of Ubuntu does not work with xRDP, an alternative desktop manager needs to be installed. In this post, we will use XFCE.

Install xRDP and XFCE

sudo apt-get install xrdp xfce4 xfce4-terminal gnome-icon-theme-full tango-icon-theme

Configure xRDP

First, create an .xsession file in the home directory.

echo xfce4-session >~/.xsession

Then edit the startup file for xRDP /etc/xrdp/startwm.sh.

How to automatically mount your cloud folder with WebDAV

In this post, I will explain how to automatically mount your cloud folder with WebDAV. I will use GMX storage as an example (https://storage-file-eu.gmx.com/).

Build FreeRDP with smartcard on Ubuntu

Compilation instruction

Besides the suggested base dependencies, also install libpcsclite-dev

sudo apt install libpcsclite-dev
cmake -DWITH_PCSC=ON -DWITH_SSE2=ON .

Then follow the Build section in the compilation instruction.

Install brat on Ubuntu (Apache2)

Install brat

Install Apache2

Download and unzip the brat v1.3

Move the folder to /var/www/brat

In /var/www/brat run ‘./install’. Follow the instruction to set username, password and email.

Dropbox icon is not working Xubuntu 16.04 LTS

After upgrading to Xubuntu 16.04, I found that the dropbox icon stopped working. The icon is black with a red slashed zero. I cannot click on it to bring up the dropbox menu.

The reason is that Dropbox starts to use “indicator area” for their tray icon instead of “notification area”. The problem can be fixed by running

$ dropbox stop && DBUS_SESSION_BUS_ADDRESS="" dropbox start

$ dropbox stop && dbus-launch dropbox start

How to convert sourcecode to HTML, RTF, SVG, etc.

I am working on my paper which needs a piece of XML to syntax highlighted. I’ve found Sublime with “Copy as RTF” plugins is useful, but as a programmer I prefer something that being done via commend line, and more importantly being easily customizable.

So I did a some searches and came across highlight. To install it on Ubuntu is quite simple

sudo apt-get install highlight

Then I can use highlight to convert the XML file to RTF and copy it to the paper I am working on.

How to view differences of branches with meld?

git-meld is a git command that allows you to compare and edit treeishs between revisions using meld or any other diff tool that supports directory comparison. git meld is a frontend to git diff and accepts the same options and arguments.

It is essentially an extended git-difftool for tools that support comparing directories rather than having git call the external tool for every file that has changed.

How to Install SmartGit via PPA in Ubuntu

[SmartGit] is a graphical Git and Mercurial client. It runs on Linux, Mac OS X (10.5 or newer) and Windows (XP or newer).

sudo add-apt-repository ppa:eugenesan/ppa
sudo apt-get update
sudo apt-get install smartgithg

Correct/Repeat the last command under Bash

If you often type the wrong command (or repeat the simmilar commends) under bash shell (like me), you may need to read this post:

cp file1.txt /path/to/dst
cp file1.a1 /path/to/dst
cp file1.a2 /path/to/dst

Substitute the first occurrence

How do I replace .txt with a1 and a2 and repeat the last command? The syntax is as follows for quick substitution and repeat the last command, replacing WORD1 with WORD2: