Manipulate PDFs with gostscript

By | June 28, 2015
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Basic Usage Convert PostScript to PDF: gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/ebook -dNOPAUSE -dQUIET -dBATCH -sOutputFile=fileout.pdf filein.ps Merge/combine PDF and/or PostScript files: gs -q -dBATCH -dNOPAUSE -sDEVICE=pdfwrite -sOutputFile=fileout.pdf \ filein.ps filein2.pdf Extract a page from a PostScript or a PDF document: gs -q -dBATCH -dNOPAUSE -sDEVICE=pdfwrite -dFirstPage=3 -dLastPage=3 \ -sOutputFile=fileout.pdf filein.ps Additional Options PDF optimization level selection… Read More »

Linux command line tips 1

By | July 13, 2015
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The Linux command line environment is very powerful and full of very useful command line instructions that are ignored by a lot o people. Following are some of the discovered commands I find very usefull: The “ls like” group: List all the usb devices: [root@localhost ~]# lsusb Bus 004 Device 002: ID 8087:0024 Intel Corp.… Read More »

USB Wireless interface on Fedora Linux

By | February 9, 2017
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I am planning to deploy a test openStack infrastructure, “Minimal architecture example with legacy networking (nova-network)”, on the 2 x Hp MicroServer Gen 8 setup from my home data centre. The nova-network architecture needs at least two nodes and on each node a minimal of two network interfaces must be available. The HP MicroServers have… Read More »

Convert an existing 2 disk RAID 1 to a 4 disk RAID 10

By | December 7, 2015
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When you want to have a secure set-up for your data storage having only two disks available a LVM over a RAID 1 set-up looks like the best solution. When an upgrade is necessary then having two separate RAID 1 based LVMs is no longer so appealing. To keep the same reliability of a disk… Read More »

“A” Rating Security – Strong SSL Security WordPress Blog

By | May 26, 2017
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This should have been one of the first posts of this blog, because deals with the actual setup of the blog. To install a secure Blog is not an easy task. You can take the easy route and host your blog on a blogging site and hope that they will do a good pro bono… Read More »

Private cloud is a must not a failure

By | February 9, 2017
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I keep reading this scare-ware articles from a lot of technical sites about the private cloud model being a failure.  Like this one http://www.techrepublic.com/article/private-clouds-very-public-failure/?tag=nl.e101&s_cid=e101&ttag=e101&ftag=TRE684d531. What a load of BS. Private cloud fails only when the organization has no idea how to manage it. This is valid for any IT related operation. Trusting the data of… Read More »

Disable WebRTC to hide real IP when on a VPN

By | February 9, 2017
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According to Daniel Roesler there is a privacy issue even if on VPN due to WebRTC. Your real IP can be disclosed by WebRTC. He made also a test page for this WebRTC test page. There is already a fix for your browsers : Firefox: Disable WebRTC Chrome: ScriptSafe    

Backup setup for two HP Microserver Gen8 NAS servers – part2

By | February 10, 2015
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This is a followup of the first post Backup setup for two HP Microserver Gen8 NAS servers . The new HBA arrived , an HP LSI 9217-4i4e 8-port SAS 6Gb/s RAID Card which is in fact the HP OEM version of the LSI 9207. The positive: it came with three different SAS to 4xSATA cables. The negative: it came only… Read More »

Mixed DIMMs in HP MicroServer Gen8

By | February 8, 2015
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Idea is that I have 2x8GB Kingston in one MicroServer and 2x2GB HP the original memories in the second. I was wondering how the 1x2GB+1x8GB= 10GB combination for both servers will work. I know that Intel Pentium G2020T is Dual-Core: “Ivy Bridge” and has Fast Memory Access, Flex Memory Access.  so should be OK. Actually… Read More »

voina.org Internet Speed

By | February 9, 2017
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The standard connection from UPC Romania with my subscription 200Mbps/6Mbps. Good download crappy upload. I just found out there is a new 500Mbps/25Mbps plan in my city , Cluj-Napoca. I am going to try it asap. I am wondering how will my router cope with that. Linksys E4200 has a tested WAN to LAN Throughput… Read More »