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How to revert merges with git

gnuton — Tue, 07 Sep 2010 10:32:51 +0000

The git command to use is “revert”. But before to use it we have to figure out the commit that contains the “merge” and that we want to revert.
For this purpose we use “git log HEAD~X -Y” where X = [0-N] and Y = [1-N].
Once you know X and Y, “revert” command rolls back changes: “git revert HEAD~X -mY”.
At the end the reverting commit can be pushed to the remote server with “git push”

MacBook PRO 4.1 and poor wireless antenna

gnuton — Sun, 28 Mar 2010 12:39:11 +0000

I’m back to Italy and I’m using an Alice Pirelli router as internet gateway. This kind of router is unfortunately pretty standard here although it’s very crappy.
The Pirelli wireless router is a very basic device and looks that its signal strength is not enough for my macbook pro.
The Pirelli device is placed in the living room and between me and the router there is just a wall. Despite all my devices (Phones/PCs) in this room are able to get a good signal strength, my macbook pro doesn’t.
One time more, I would like to know what makes this laptop cool.. except the brand..

Installing KUbuntu Linux from USB drive

gnuton — Sun, 14 Mar 2010 08:08:07 +0000

Since my new barebone doesn’t have any CD/DVD reader, I had to install linux via USB HDD.
I hadn’t find a good documentation about this topic, then I’ve decided to write this little post.
Well… things are pretty simple:
1) Install “unetbootin” with “apt-get” or from http://unetbootin.sourceforge.net/
2) Download latest version of KUbuntu from KUbuntu.org
3) plug your usb mass storage device (usb dongle or HDD)
4) format it with mkfs.ex3 /dev/sdX where X is the letter of your device
(to know that letter you could read last dmesg lines)
5) run unetbootin
6) select the image
7) click “Create” unplug the usb device from the first linux box and plug it in to the barebone.
9) Switch the barebone on.
10) Press F8 (If you have an ASUS motherboard) to boot from USB
11) grub will say that it can’t load “linux” kernel
12) to run your image write this: “ubnkern ubninit boot=casper BOOT=casper nopersistent rw

That’s all. Good installation! ;D

Text Adventures or Interactive Fiction

gnuton — Tue, 15 Dec 2009 13:22:06 +0000

Today I found an Interactive fiction interpreter running in several platforms… and of course Linux is one of them…
After trying it in my linux box I tried to compile it for my N900. Still there are some issues compiling JAM (a replacement for make) for X86 target…

The interpreter is called Gargoyle and it claims to be able read all kind of IF file types.

Ubuntu packages are available here: https://launchpad.net/~radix/+archive/ppa
A lot of Quests are available… use google to find them…

My first post written with ScribeFire

gnuton — Sun, 22 Nov 2009 08:53:34 +0000

This is a test post written with a Firefox add-on..

Edit webpages with in your web browser

gnuton — Wed, 24 Jun 2009 19:08:57 +0000

There are some javascript tricks able to enable the hidden design mode.
To do that you just need to put this: “javascript:document.body.contentEditable%20=%20′true’;%20document.designMode=’on’;%20void%200″ in your address bar and you can switch it off with “javascript:document.body.contentEditable%20=%20′false’;%20document.designMode=’off’;%20void%200″

The latest command doesn’t work in Firefox3.
These commands should instead should work in Firefox3 too:
“javascript:document.body.contentEditable=”true”;void0″ and “javascript:document.body.contentEditable=”false”;void0″

Resume scp transfers

gnuton — Mon, 22 Jun 2009 20:31:15 +0000

If you are coping a file (uploading/downloading) with ssh and the connection is interrupted. Then if you need to continue to downloading/uploading the latest processed file, then you can define scpresume:
alias scpresume=”rsync –partial –progress –rsh=ssh”
and then you can use it with the same syntax used by scp.

resolv.conf must be a symlink

gnuton — Mon, 22 Jun 2009 20:26:03 +0000

resolvconf: Error: /etc/resolv.conf must be a symlink
fix:
/etc$ sudo ln -s /etc/resolvconf/run/resolv.conf

Mirrorin a website + cookies

gnuton — Sat, 30 May 2009 14:50:14 +0000

If you want to mirror a phpbb or other CMS that ask for an authentication, you can get the coockis from the firefox dir.
In my case is:
cp /home/gnuton/.mozilla/firefox/xxxxxx.default/cookies.sqlite .
Then convert the coockies file from sqlite to plain paper with this script

gnuton@iron:/tmp/SS$ cat SS
#!/bin/bash
#

sqlite3 $1 < .mode tabs
.header off
select host as domain,
case substr(host,1,1)=’.’ when 0 then ‘FALSE’ else ‘TRUE’ end as flag,
path,
case isSecure when 0 then ‘FALSE’ else ‘TRUE’ end as secure,
expiry as expiration, name, value from moz_cookies;

EOF

The you have your plaintext cookies file and you can run now wget to do the job.
$ wget –load-cookies cookies.txt -m -np http://mywebsite.com

Mirroring a website n Linux

admin — Fri, 01 May 2009 11:17:09 +0000

Well, in linux the best tool to take a copy of a entire website is WGet.
Scenario: To get all the pages, images and the other contents that are in a hypothetic book/ directory of a hypothetic website (eg: example.com), we can run:
wget -m -np -p http://www.example.com/book/

where “m” stands for “mirror”, “np” is “no parent” (we want only the pages in the book/ directory) and the “p” flags tells to wget taking all the resources (like images) needed to display correctly the web pages mirrored in offline mode.