PowerShell equivalent to Tail -F

Use
Get-Content -Wait -Tail 10

Garming GPS dowload Maps to SD instead of device

Create folder \Garmin on the SD card.
Copy the file garmindevice.xml from \Garmin folder of your device into the \Garmin folder of the SD card.
Run the Garming express , it should detect the SD card as a Garming GPS.

The map files will end up on the SD card in folder \.system and will be named gmapprom.img, gmapprom.unl and gmapprom.gma. Create folder \Map on the SD card and move these three files into it. You can then rename the files from gmapprom to any name of your choosing, but keep the .img, .unl and .gma extensions.

If your device has junction views, you will find a JCV folder within the \.system folder on the SD card. Move the JCV folder and its contents into the \Garmin folder of the SD card.

Full details in http://www.poi-factory.com/node/39231

Chose user used by samba

Problem:
I wanted to have a samba share with guest access, and the user used by samba to write on the server to be a specific user account, so that I could also manipulate the files placed in the share.

By default the user used was nobody, and the I was having problems using the local linux account in the server to manipulated files, as it did not have the correct access rights.
The option that solved my problems was:

[Share]
path = 
writeable = Yes
force user =  # this was the line that fixed the nobody user
guest only = Yes 
guest ok = yes
browseable = Yes
public = yes
hide dot files = no

How to change default application in a website in IIS

The solution to set one application as the default for when you hit a website is to change the website Physical folder, to match the application root folder. As explained in a Server fault post.
Another hack-around is to put a index.html page in the root of the site performing the re-direct.
Using the redirect feature of ISS can cause trouble with you application, I recommend against it.

The best answer form me is:

Turns out you can edit the physical path of the Default Web Site (right click, Manage Web Site, Advanced Settings). Change that to the physical path of the app you want to be default, make sure other settings match (in my case the App Pool had to be changed), and there you go.

Direct link to best reply

blogspot: how to insert code

To insert code nicely formatted in blogspot use the following code:

<pre><code>
my code goes here...
</code></pre>

emacs: saves all the backup into a single folder

A nice settings suggested in http://www.emacswiki.org/emacs/BackupDirectory to get all your backup files created by emacs in a single folder, to do this I setup the following settings:

;; Put all backups in a folder
(setq
 backup-by-copying t
 backup-directory-alist `(("." . "~/.emacs_saves"))
 delete-old-versions t
 kept-new-versions 6
 kept-old-versions 2
 version-control t)

Firefox about pages

Here is a list of the firefox about pages (from: http://lifehacker.com/232995/inside-firefoxs-about-pages)

• about:config
• about:cache
• about:config
• about:blank
• about:newtab
• about:home
• about:healthreport
• about:permissions
• about:plugins
• about:telemetry

The Mozilla documentation is found in http://kb.mozillazine.org/About_protocol_links

Check also my personal Firefox options here.

Disable message "This site has requested that you identify yourself with a certificate:" in Thunderbird

Thunderbird as one(not the only one) annoying feature that it keeps asking you to chose a certificate to identify yourself. The text in the box is: "This site has requested that you identify yourself with a certificate:", then there is a drop-down menu to chose among your certificates, then there is a checkbox that says "Remember this decision", then the buttons "OK" and "Cancel".

Very nice, too bad it asks you for input every single time it needs to authenticate... this is real annoying, it seems the checkbox is there to taunt, because it feels Thunderbird cannot remember your decision...

The solution is simple, but you need to open the config editor "about:config":

• Linux: Edit/Options -> "Advanced" section -> "General" tab -> "Config editor" button.
• Windows: Tools/Options -> "Advanced" section -> "General" tab -> "Config editor" button.
• Mac: Thunderbird->Preferences...->"Advanced" section -> "General" tab -> "Config editor" button.

Search for the entry "security.default_personal_cert" and change it to "Select Automatically" (default value is "Ask Every Time").

This information was collected from mozillazine forum http://forums.mozillazine.org/viewtopic.php?t=652927

Burning an DMG into a USB drive using macOS X snow leopard

To burn a dmg to a usb drive, you only have to open Disk utility Select the destination partition or the origin image, right click a choose restore, then you will be lead to a dialog window were you can specify the origin and destination of the restore. Then click restore and you are done. Simple right? But when thing simply do not work? So I had just clicked restore and I see the message:

So I need to scan the image? Easy, in Disk utility go to Image->Scan image for restore... . Select the image you want to scan and click scan. Insert the administrator password and you are all done, right? Wrong, I got this very useful message:

What do you mean, "invalid argument" ??? I'm not using command like this is a freaking GUI!!! You should figure what arguments are to be used! Oh well, lets see the log file for some info:

And the log file says the problem was "invalid argument"! Great! Very useful! Google time.... After a bit of search I came to the website and there was a comment:

So... Snow leopard cannot scan a read/write image? Ok, sounds we are back in the right track, lets convert this sucker. To convert an image go to the Disk utility and select Images->Convert... . You get a window asking for you to select the original image, and then you are let to the window with the destination options, make sure you select the image format to read-only:

And wait... After that is done, you still need to scan the image, in Disk utility go to Image->Scan image for restore... , This time it is working:

And.... Worked!

So now I'm ready to burn the image into a USB drive... The thing I actually want to do. So I right click on the destination partition, and select Restore:

Then I'm back to the dialog where I have to select restore image and destination.

I press restore and this time I'm successful.

One more thing...

Another thing, apparently the destination partition has to be a "Mac OS Extended (Journaled)", and the partition table has to be "GUID Partition Table". The partition type will be asked of you by the Disk utility when you create the partition, but for the partition type, you have to click the button "Option..." and then select the GUID partition type:

Free audiobooks

You can use google to find free audiobooks from audible, the search string is:

 $0.00 -Excerpt -Interview -Chapter -Extract -Speech -Sample -"A Conversation" -"This is Audible" site:audible.com 

or you can follow the link here. Tip from lifehacker.

Here are some useful shortcut keys for the open/save dialog window of macos X:

Spacebar – View the selected item in Quick Look
Command+D – Selects Desktop as the destination
Command+Shift+H – Sets the Home directory as the destination
Command+Shift+A – Sets Applications directory as the destination
Command+Shift+. – Toggle invisible items
Command+Shift+G – Bring up Go To Folder window
Tab – Tab key auto-completes paths and file names from the aforementioned Go To window
Command+R – Open the selected item in the Finder
Command+F – Move the cursor to the Find field
Command+. – Close the Open/Save dialog window

I was getting annoying messages in the console tty1-8:

[34895.467445] jme 0000:02:00.5: eth0: UDP Checksum error
[34896.613044] jme 0000:02:00.5: eth0: UDP Checksum error
[34896.620748] jme 0000:02:00.5: eth0: UDP Checksum error
[34896.727510] jme 0000:02:00.5: eth0: UDP Checksum error
[34896.933031] jme 0000:02:00.5: eth0: UDP Checksum error

I tried to fix it playing with the system log /etc/rsyslog.d/50-default.conf, but that was not it, I could get a copy of the stream to a file, but not prevent the stream from flooding my screen. The solution was the kernel printk definition. running teh line sudo sysctl kernel.printk="3 4 1 7" it stopped the messages, looking around this variable is defined in /etc/sysctl.conf, so I uncommented the line

# Uncomment the following to stop low-level messages on console
kernel.printk = 3 4 1 3

This solved my problem permanently. NEW SOLUTION from http://theamdara.blogspot.fr/2014/01/linux-jme-micron-udp-checksum-error.html

ethtool -K eth0 rx off

emacs: Cycle windows backward

To cycle windows in emacs you can use the shortcut c-x o that executes the command other-window. Now to cycle windows in the reverse order you need to execute the command other-window with argument -1 (other-window accepts integer as argument, being the number of windows to jump). So I added this code to my .ecmas file:

;; cycle windows in reverse order
(defun prev-window ()
  (interactive)
  (other-window -1)
)
(global-set-key (kbd "C-x p") 'prev-window)

This will create the command prev-window and assign the shortcut C-x p to this function. Note: C-x p is by default assigned to narrow-to-page, a function I never used... This Idea I found it originally in Quora.com

Resize windows in emacs

To easily resize windows in emacs I added the following key shortcuts:

;; * \author Pedro Parracho   
;; Resizing windows using alt-arrow
 (global-set-key (kbd "\033[1;9D") 'shrink-window-horizontally) ;;alt-left: code ^[[1;9D                                                    
 (global-set-key (kbd "\033[1;9C") 'enlarge-window-horizontally) ;; alt-right: code ^[[1;9C                                                 
 (global-set-key (kbd "\033[1;9A") 'shrink-window) ;; alt-up: code ^[[1;9A                                                                  
 (global-set-key (kbd "\033[1;9B") 'enlarge-window) ;; alt-down: code ^[[1;9B                                                               

Now alt-arrow will change the window size by a step.

GNU screen renumber windows

When working a long time with a screen session, you might get holes in the screen numbering, to change the number of the current windows do ctrl-a : number <number>
There is a script that will renumber all the windows in a session, you can find it in http://brainscraps.wikia.com/wiki/Renumbering_GNU_Screen_Windows

Go to next unread message in Mail via keyboard

A long standing annoyance in Mail is that there is no keyboard shortcut to skip to the next message. I found in hints.macworld.com a apple script that will jump to the next unread mail on ctr-n.
I changed the script to jump to the last item and not the first, as I like to read my messages by chronological order.

try
 tell application "Mail"
  activate
  tell the front message viewer
   set unreadMessages to (the messages whose ¬
    read status is false) as list
   if (count of unreadMessages) is not 0 then
    set selected messages to {the last item of unreadMessages}
   else
    beep
   end if
  end tell
 end tell
on error error_message
 beep
 display dialog "Error looking for next unread message: " & ¬
  return & return & error_message buttons {"OK"} default button 1
end try

To have this script activated, instead of copying it to the mail script folder as suggested in the article, I created a new service with "no input" in "Mail.app" that will run the apple script on the top. Saved the service, and added the shortcut ctrl-n in the keyboard settings.

SvnX hurdles

I was having 1 problem common to svn and svnx. The problem was the message: "Killed by signal 15."

I found out that this was something that happens for svn > 1.6.6.

The solution according to old.nabble.com is to add the option -p to the ssh command in your svn configuration file ~/.subversion/config

The other problems was /usr/bin/xauth: error in locking authority file .Xauthority this got solved by adding the option -x

My line in ~/.subversion/config is now:
ssh = $SVN_SSH ssh -o ControlMaster=no -q -x

Controling airport from command line

I wrote two small scripts to control the power status of the mac airport.

1. Power cycle the airport

#/bin/bash
# This script does a power cycle of the airport
# Pedro Parracho <pedro.parracho@gmail.com>

/usr/sbin/networksetup -setairportpower airport OFF
/usr/sbin/networksetup -setairportpower airport ON

 
2. Toggle the power status

#/bin/bash
# This script toogles the power status of the airport 
# Pedro Parracho <pedro.parracho@gmail.com>

airportPower=$(/usr/sbin/networksetup -getairportpower airport| cut -d' ' -f4 | tr '[:lower:]' '[:upper:]')

if [ $airportPower = "ON" ]
then
    echo airport is ON, turning it OFF
    /usr/sbin/networksetup -setairportpower airport OFF
else
    echo airport is OFF, turning it ON
    /usr/sbin/networksetup -setairportpower airport ON
fi

Fine grain control for volume and brightness

MacOS offers a way to get a finer control on the steps of increase and decrease of volume and screen brightness, to access the fine grain mode, also press the keys shift+option when changing the sound or brightness level.