How to Change the DPI of Images Exported from Slides in PowerPoint

PowerPoint uses 96 dots per inch (dpi) by default when you export a slide. The DPI of the images like .tif ones exported from PowerPoint are always 96. In the options of PowerPoint, there is a setting for choosing DPIs. However, it have no effect. For some needs like images for printing posters, larger DPIs like 150 or 300 are needed. » Read more

How to Print PowerPoint Poster by HP Designjet 500 Plotter

First time getting my hand on a plotter (HP Designjet 500) directly to print a poster, I found it was an interesting experience. But configuring the printer settings was not that straightforward compared to using normal office A4 printers. I took photos of how it was configured for reference of my own and also those who may need it. First, here is a picture of the HP Designjet 500 plotter, a pretty big printer. » Read more

Windows 7 MAK Activation

The Windows 7 Multiple Activation Key (MAK) can be used to activate Windows 7 Enterprise installed with the Windows 7 Volume Licence DVD provided by Microsoft to enterprise/university customers. How to activating Windows 7 with MAK: 1. Make sure your system is connecting to the Internet. During Windows 7 activation, Windows will connect to for validation. 2. Click on Start-Control Panel-System and Security. » Read more

Viewing XPS Files in Linux

XPS files is a format from MS on Windows. Evince can view some XPS files, but fails to view some. To view XPS files generated on Windows on a Linux system, we can use mupdf. It works very well. I like it much especially in the situation that Evince fails to open the XPS file. Install mupdf ∞ Install mupdf by yum: # yum install mupdf View XPS files ∞ To view a xps file aaa.xps: $ mupdf aaa.xps » Read more

How to Get System Uptime on Linux and Windows OSes

How to find out Linux and Windows uptime is introduced in this post. Linux uptime ∞ Linux uptime can be easily found out by the uptime command: $ uptime 22:19:29 up 10 days, 22:26,  5 users,  load average: 0.00, 0.00, 0.00 The system is up for 10 days, 22 hours and 26 minutes. uptime gives a one line display of the following information. » Read more

Open Source and Portable SSH, SCP, SFTP and VNC Clients for Windows to Remote Control Linux

ssh, scp, sftp and vnc are frequently used tools (both servers and clients) on Linux. We may want to remote control a Linux box from Windows such as when we make demostration in a meeting while our work are done on the Linux box. There are lots open source SSH, SCP, SFTP and VNC clients for Windows to remote control Linux. » Read more

Flush DNS Cache of Linux and Windows Client

We may need to flush DNS cache of our client when the site’s DNS has been changed. Flush DNS cache of Linux with NetworkManager/dnsmasq ∞ You may simply restart NetworkManager by sudo systemctl restart NetworkManager Flush DNS Cache on (Old) Linux with nscd 1) Use su – to get root privilege or sudo with the following command: # /etc/rc.d/init.d/nscd restart or # service nscd restart Flush DNS Cache on Windows: 1) Log in as a Administrator on Windows XP and previous version. » Read more