After a server crash a wanted to compare all actual files with the backuped data. An easy way is to compare the md5 hashes like that:
First create recursively md5 hashes from all files in that directory:
find ./backup -type f -print0 | xargs -0 md5sum > /checksums_backup.md5 |
Then check the actual data:
md5sum -c checksums_backup.md5 |
I was lucky, no files where damaged.
…yeah, this thing happened only once, but its a great example:
I heavily use email on my mobile phone. Actually, i’m using ssl for sending emails. Suddenly out of nothing it stopped working. Receiving via imaps wasn’t a problem, but outgoing mail stuck with “unrecognized command”. Yeah, great. Checked configs in my phone, on my server, nothing changed.
Today i read this:
Der Mobilfunkanbieter O2 filterte in seinem UMTS- und GPRS-Netz zeitweise Befehle zur Aktivierung von verschlüsseltem E-Mail-Versand. O2-Pressesprecher Albert Fetsch erklärte, Ursache sei ein Software-Update und ein Hardwaretausch einer Firewall an einem Standort im Core-Netz Anfang September gewesen. Das Problem sei nur punktuell aufgetreten und nun behoben.
It basically says that German provider O2 filtered some commands for encrypted email, namely STARTTLS.
I recently got the impression that i always stumble upon such things, invest a whole lot of time, get angry, stressed and what not. I hate feeling miserable for other dickheads mistakes.
Apart from that, interesting lapse to make in a softwareupdate.
I recently watched the new Microsoft “Life without walls” spots (have a look at them here) that are directly pointed at Apples “Mac vs. PC” campaign and i must say, i like them. In fact, they are much less arrogant than apples spot.
But if you wanna see some real ads, have a look at this spots with Steve Balmer:
Wether you like him or not, this guy is just crazy and it seems he doesn’t give a shit:
Either his incredible self introduction that will never be topped by anyone else
or his well known call for developers:
and his ads for Windows 1.0 and XP after the click:
Thinks i keep forgetting. Today: Enabling a JTree in J2SE to show different tooltips on his nodes:
1. Create a custom tree renderer like so:
import java.awt.Component; import javax.swing.JTree; import javax.swing.tree.DefaultMutableTreeNode; import javax.swing.tree.DefaultTreeCellRenderer; public class TooltipTreeRenderer extends DefaultTreeCellRenderer { @Override public Component getTreeCellRendererComponent(JTree tree, Object value, boolean sel, boolean expanded, boolean leaf, int row, boolean hasFocus) { final Component rc = super.getTreeCellRendererComponent(tree, value, sel, expanded, leaf, row, hasFocus); String tooltip = "Compute some arbitrary text depending on the node (which is hidden behind 'value')"; this.setToolTipText(tooltip); return rc; } } |
2. Set this renderer
aTree.setCellRenderer(new TooltipTreeRenderer()); |
3. Keep wondering, why the tooltip doesn’t show…
4. Register the tree with the ToolTipManager (which isn’t necessary for nearly all other Swing Components…)
javax.swing.ToolTipManager.sharedInstance().registerComponent(aTree); |
5. Enjoy 🙂
