Browsing All posts tagged under »debian«

QEMU raw images real size

May 8, 2011

2

Today I noticed a nice thing about using “raw” hard disk images with QEMU: the images are sparse files. What does it mean? Sparse files are an useful feature of many file system formats that saves space in case of files that contain chunks of zero data. My host’s file system is formatted with ext4, […]

Trying Debian for ARM on QEMU

October 17, 2010

9

Many Linux developers in these years are working on porting Linux software on ARM architectures. Debian in particular offers the full distribution to be installed on supported devices, and I wanted to try it out. There are already images prepared for the Versatile platform (thanks to Aurélien Jarno), and with them it is possible to […]

Linux NFS Root under QEMU ARM emulator

April 27, 2010

40

Booting Linux on QEMU ARM emulator mounting the root filesystem through NFS exports.

Booting Linux with U-Boot on QEMU ARM

April 12, 2010

107

Using QEMU to emulate the complete boot procedure of an ARM system using U-Boot, the Linux kernel and Busybox.

Scratchbox on Ubuntu

March 14, 2010

21

Scratchbox is a framework to help developers with cross-compilation of Linux software. Cross-compilation is the process of compiling a program that will run on a machine with an architecture different from that of the compiling machine; Scratchbox eases this task using a combination of chroot environment, cross-compiling toolchains (like CodeSourcery) and emulation (like QEMU). Ubuntu […]

MyHDL on Ubuntu

February 23, 2010

6

The MyHDL Python modules can now be installed on Ubuntu using a convenient Launchpad PPA repository.

Improve Linux boot time

September 9, 2009

1

A few tips to speed up boot for your Linux box: 1. You need a tool to measure performance objectively: bootchart is very useful to track the lifetime of the processes, disk I/O and CPU load during boot. It needs no configuration whatsoever: you install it (for example using “apt-get install bootchart” in Debian-based systems) […]

Secure remote storage using sshfs and encfs

August 23, 2009

4

I was particularly impressed by Dropbox and its ability to backup, retrieve and share files so easily, but I am quite concerned about the security issues deriving from having your files on a remote, closed-source system. I think that a good remote storage solution should prevent the owner of the storage server from accessing private […]

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