Paste columns in vim

Finaly, after years of searching, i found an almost perfect solution.

I sometimes like to write lists in vim which have 2 columns, or sometimes you copy something from the web and want to have it in two columns.

First you have the text in one column, then you go to the first row you want to have in the second column. Then you enter visual blockmode with Ctrl-V, then you press $, as not all rows will be the same length. Then scroll down with j and select all items you want to have in the second column. Then yank with y, or delete with x, go to the first corner of the second row and paste with p.

list only directories

This lists visible and hidden ones.

ls -d */ .*/

rsync over ssh without rsync –daemon

rsync -e ssh -l somefile someuser@someip:

clear scrollback buffer in terminal

clear and ^L:

clears window and sets cursor at beginning of window.

reset or ⌘K on Mac OSX:

clears whole scrollback buffer

No Sound in Java-apps in Firefox

For a long time i had not sound in Firefox on Sites using Java (hobnox.com, runescape.com)

I tested the Javasound localy withe the JavaSoundDemo:

http://java.sun.com/products/java-media/sound/samples/JavaSoundDemo/

and i worked flawlessly.

I had to activate the OSS Sequencer API in the Kernel under:

Device Drivers/Sound/Advanced Linux Sound Architecture/

So even modern sites still use and need the OSS API, good to know :)

Searching for all ebuilds with specific useflag in Gentoo

Ever wondered how to find all those programms in portage you didn’t install, which have a specific useflag you were interested in ?

Well, eix is capable of this useful feature, just search like this:

eix -U someuseflag

Compare Directories with diff

Its easier than i thought, just type:

diff -rq Dir1 Dir2

-r stands for rekursive

-q output only wether content differ

Mounting ext4-filesystem with newer Kernels

Trying to mount my ext4 partiton with a 2.6.25 kernel i get this errormessage:

EXT4-fs: hda3: not marked OK to use with test code.

There is a new special flag you have to set to mount development code, so do:

[root]# debugfs -w /dev/hda3
debugfs 1.40.9 (27-Apr-2008)
debugfs: set_super_value s_flags 4
debugfs: quit

More info here.

Syncing your portage tree and overlays with eix

If you want to sync your portage tree and your layman-overlays with one command, you can use
eix-sync
for that.

All you have to do is to create
/etc/eix-sync.conf
and place a
*
in it.

If you want to have a cronjob for that create for example a file named /etc/cron.weekly/eix.cron

and put something like

#!/bin/sh
/usr/bin/eix-sync

in it.

You can then delete all other cronjobs like emerge –sync and layman -S

As usual man eix has all the info you need.

Java not working when libX11 compiled with xcb useflag

Put

LIBXCB_ALLOW_SLOPPY_LOCK=1

in your /etc/env.d/99local