activer mode hibernation mise en veille prolongée windows vista

Pour activer la mise en veille prolongée windows vista/seven

powercfg -h on

Mac OS X recover lost password

To reset your OS X password without an OS X CD you need to enter terminal and create a new admin account:

1. Reboot
2. Hold apple + s down after you hear the chime.
3. When you get text prompt enter in these terminal commands to create a brand new admin account :

• mount -uw /
• rm /var/db/.AppleSetupDone
• shutdown -h now

4. After rebooting you should have a brand new admin account. When you login as the new admin you can simply delete the old one and you’re good to go again !

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Step 1: Start up from a Mac OS X Install CD.

MacOSX-DVD.pngThis hardest part of this technique may be laying your hands on a Mac OS X Install CD when you need one. Use a version that is close the the version of Mac OS X you have installed.

Hold the C key as the computer starts to boot from the CD.

When the installer starts, choose your language, and you'll proceed to the welcome dialog.

Step 2: Choose Reset Password from the Utilities menu.


Tip: In previous versions of Mac OS X (10.2 and 10.3), you can find the Resent Password option under the Installer menu instead.

Step 3: Select your Mac OS X hard disk volume.


Select the user name of your original administrator account.

inittab & event.d & /etc/init

Avec ubuntu 8.04 il n'y a plus de fichier inittab.

C'est remplacé par des scripts placés dans /etc/event.d

Ainsi pour augmenter le nombre de consoles virtuelles il faut placer des scripts tels que :

tty7, tty8, ... dans /etc/event.d

Il semble que event.d est supprimé dans ubuntu à partie de 10.04 : remplacé par /etc/init qui commande upstart.

http://upstart.ubuntu.com/index.html

get directories with sftp/scp

Pour copier des directories avec sftp il faut en fait utiliser scp avec une commande du genre

scp -r -p user@host:/path/to/file/ .

pour copier dans le répertoire courant

perl List::Compare array listes

Pour trouver l'intersection, l'union, le complément, etc. entre deux ou plusieurs listes : utilisation du module perl :

List::Compare

Methods

All the comparison methods available in the Regular case are available to you in the Accelerated case as well.

    @intersection     = $lca->get_intersection;
    @union            = $lca->get_union;
    @Lonly            = $lca->get_unique;
    @Ronly            = $lca->get_complement;
    @LorRonly         = $lca->get_symmetric_difference;
    @bag              = $lca->get_bag;
    $intersection_ref = $lca->get_intersection_ref;
    $union_ref        = $lca->get_union_ref;
    $Lonly_ref        = $lca->get_unique_ref;
    $Ronly_ref        = $lca->get_complement_ref;
    $LorRonly_ref     = $lca->get_symmetric_difference_ref;
    $bag_ref          = $lca->get_bag_ref;
    $LR               = $lca->is_LsubsetR;
    $RL               = $lca->is_RsubsetL;
    $eqv              = $lca->is_LequivalentR;
    $disj             = $lca->is_LdisjointR;
                        $lca->print_subset_chart;
                        $lca->print_equivalence_chart;
    @memb_arr         = $lca->is_member_which('abel');
    $memb_arr_ref     = $lca->is_member_which_ref('baker');
    $memb_hash_ref    = $lca->are_members_which(
                            [ qw| abel baker fargo hilton zebra | ]);
    $found            = $lca->is_member_any('abel');
    $memb_hash_ref    = $lca->are_members_any(
                            [ qw| abel baker fargo hilton zebra | ]);
    $vers             = $lca->get_version;

How do you get Harddrive info with ubuntu ?

lshw -businfo -C disk

fdisk -l

How to list applications that open a port on mac os x

Pour lister les applications qui ouvrent un port sur mac os X

au lieu de netstat -anp avec linux, utiliser avec mac os x

sudo lsof -i -P | grep LISTEN

Attention bien faire un sudo.