Lnxgeek.org Wiki - Freedom of choice, I choose Freedom howtos

howtos:apt-file

2008-05-24T18:13:52+02:00

1 Initital Situation I guess you all know this: you try to compile some software from the sources, and suddenly the compilation stops because it complains that some file is missing of which you have never heard before: root@falko-desktop:~/avant-window-navigator-0.1.1# make make all-recursive make[1]: Entering directory `/root/avant-window-navigator-0.1.1' Making all in src make[2]: Entering directory `/root/avant-window-navigator-0.1.1/src' if gcc -DHAVE_CONFIG_H -I. -I. -I.. -DOR…

howtos:bash-scripting

2010-02-04T12:28:11+02:00

Demystify test, [, [[, ((, and if-then-else Are you confused by the plethora of testing and comparison options in the Bash shell? This tip helps you demystify the various types of file, arithmetic, and string tests so you will always know when to use test, [ ], [[ ]], (( )), or if-then-else constructs.

howtos:disk-uuid

2007-05-25T12:25:13+02:00

To find out the UUID, use the following command $ /sbin/blkid or $ sudo vol_id -u device

howtos:dshield_postfix_map_script

2006-07-29T01:43:11+02:00

This is a little script I made for the fun of it. I don't know if it is usefull - it depends on who is behind the attaching IP ranges in the Dshield list. I intended it to be used as a RBL/Blackhole list so when someone from the list tries to deliver mail to you they will be denied access. I assume that the IP ranges are bad guys either trying to spam you or attack you.

howtos:firefox-ubuntu-feisty

2007-04-30T15:41:32+02:00

* Type “about:config” in the addressbar * Type “agent” in the filter bar * Modify the key “general.useragent.extra.firefoxComment” to something else than the word “feisty” * E voilá you can now browse normally again 8-)

howtos:firewall_script

2007-08-03T16:03:39+02:00

gui-firewall.sh: CMD="sudo /home/tdd/bin/firewall.sh" ACTION=`zenity --title "Firewall" --text "Please choose an option" --list --radiolist --column "Selection" --column "Action" False block False stop True start` exec $CMD $ACTION firewall.sh:

howtos:fix_grub

2007-05-22T17:14:30+02:00

[:howtos:fix_grub.pdf]

howtos:grub_via_serial

2008-07-26T21:10:59+02:00

With this configuration of Grub I can boot my box and control the boot menu, make choice's, and see the output from the boot sequence. /boot/grub/menu.lst #color white/blue black/light-gray default 0 timeout 3 #gfxmenu (hd0,0)/message serial --unit=0 --speed=9600 terminal --timeout=15 console serial ###Don't change this comment - YaST2 identifier: Original name: linux### title SUSE LINUX 9.3 # kernel (hd0,0)/vmlinuz root=/dev/hda2 vga=0x31a selinux=0 splash=silent resume=/dev/hda3 show…

howtos:iftab

2008-06-20T18:13:42+02:00

When you install Ubuntu Feisty the installer “hardcode” the logical interface names to specific nic's. That is okay, if you only have one interface. However it can give you some headache if you have more than that. I installed my workstation while I had a nic in the pc-card slot which got bound to eth0. I like having the eth0 bound to my permanent ethernet interface on the motherboard. It took some time until I stumbled upon the file /etc/iftab:

howtos:mail_tester

2007-10-15T16:48:02+02:00

Mail Tester Script The script is based on zenity and the Postfix mail generator smtp-source. It is meant for testing mail-relays and what they return if something goes wrong. Or if you just need a lot of test mails send quickly. There are a couple of more options available but I don't need them at the time. If you need them you can use this as a starting point and then just add them yourself.

howtos:mailserver

2006-09-09T11:16:13+02:00

Introduction This is a howto on setting up a nice spam-virus fighting mailserver. It's based on a singlebox install but spreading out the components, isn't that difficult. I've tried building it so it could scale and still be easy to manage, with a lot of good webinterfaces. I think I have accomplished that - hope you can agree :-)

howtos:move-swap

2008-05-24T11:33:49+02:00

This is a description for Ubuntu Feisty (or at least that is what has been tested). Please also note that I use uswsusp for suspend/hibernation. Find the new name of the swap partition: root@dubex-tdd:~# fdisk -l Disk /dev/sda: 100.0 GB, 100030242816 bytes 255 heads, 63 sectors/track, 12161 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda1 * 10029 11552 12241530 7 HPFS/NTFS /dev/sda2 …

howtos:pure-ftpd-pureadmin

2008-05-02T16:24:16+02:00

Getting Pure-ftpd and PureAdmin Working This guide is made for Ubuntu Hardy Heron but it should also work as a generic guide. As I want to use the ftp server on my desktop I only need a simple configuration (quick'n'dirty), thus only authenticate users with PureDB.

howtos:pure-ftpd

2007-09-15T19:28:11+02:00

This is how I setup my ftp server with Pure-FTPd and MySQL as backend for authentication and user profiles and sOLARiZ PureFTPd Manager as interface to MySQL. Pure-FTPd Setup Install Pure-FTPd the way you like it. As I use SuSE 9.3 I use the version bundled with the distribution and hence use the “SuSE Standard” for file locations.

howtos:random_generator

2007-01-12T23:46:38+02:00

Simple little script, based on Zenity, that delivers a random string through a GUI. As Zenity is GTK+ based it works best in Gnome. #!/bin/sh $(zenity --title="Random Generator" --question --text="Extra Cryptic?") if [ $? -eq 0 ] then LENGTH=`zenity --title="Random" --entry-text="12" --entry --text="Lenght of Password (max 60):"` RANDOM=`head -c 45 /dev/random | uuencode - | head -n 2 | tail -n 1 | cut -c -$LENGTH` zenity --title="Random Cryptic" --entry-text=$RANDOM --entry --text="Rando…

howtos:reinstall_grub

2007-02-21T17:10:44+02:00

* Get yourself a LiveCD * Boot using the LiveCD and mount the partition containing your distribution (if it hasn’t been already mounted by the LiveCD distro) * Open a terminal window, gain root access, and type: “chroot /mnt/hd??” OR “chroot /media/hd??” where the first ”?” stands for the hard disk letter and the second ”?” stands for the partition number. Note that some distributions use ”/media” for mounting drives, so check both ”/mnt” and ”/media” before attempting to manually mount the…

howtos:rm_many_files

2007-08-07T10:01:29+02:00

Goto to the directory: cd ~/.thumbnails And execute a find command with xargs: find . -name '*.png' | xargs rm Or you could: echo * | xargs rm How to create a 1000 files: for (( i=1 ; $i<=1000 ; i=$i+1 )) ; do echo ffffffffffffffffffffffffffffffff > ffffffffffffffffffffffffffffffffffffffffffffffffffffffffff$i ; done

howtos:suspend-ubuntu-feisty

2007-05-19T19:29:22+02:00

Install µswsusp: sudo apt-get install uswsusp Test it: sudo s2disk ## CAUTION: make sure data is saved for this test! Download these files: * [hal-system-power-hibernate-linux] * [hal-system-power-suspend-linux] and put them in /usr/lib/hal/scripts/linux:

howtos:suspend-ubuntu-heron

2008-04-17T08:19:15+02:00

With my ATI X1400 graphic card an a IBM/Lenovo T60 with the proprietary driver, suspend and hibernation doesn't work out-of-the-box. Fortunately the fix is simple: just make changes to the acpi-support file in /etc/default. Make it look like this and your good to go.

howtos:switching-monitor-ubuntu-feisty

2007-05-12T17:30:30+02:00

Install xbindkeys: sudo apt-get install xbindkeys xbindkeys-config Get this python script: * [aticonfig_switch.py] and place it e.g. in ~/bin Make it executable: chmod +x aticonfig_switch.py Now run: xbindkeys-config and bind the script to a key kombination. I use Winkey+S.

howtos:ubuntu_gnome-obex-send

2007-04-29T20:23:38+02:00

For unknown reasons the gnome-obex-send GUI doesn't work in Ubuntu Edgy. When trying to send a file the “Send to” selector is just blank. It is possible to send files from the commandline like this: # hcitool scan Scanning ... 00:12:62:5D:65:E2 Nokia 9300 # gnome-obex-send --dest=00:12:62:5D:65:E2 file.txt Browsing 00:12:62:5D:65:E2 ... Service Name: OBEX Object Push Service RecHandle: 0x10000 Protocol Descriptor List: "L2CAP" (0x0100) "RFCOMM" (0x0003) Channel: 9 "…

howtos:url_spam_block_postfix

2006-08-08T09:45:54+02:00

This script downloads two lists of URL's that has been spotted in spam mails and reported to and . The idea is that if this URL is found in the mail it must be spam and thus discarded.

howtos:vmware_usb

2007-02-20T20:09:22+02:00

USB Devices Are Not Available on Some Linux hosts, the VM > Removable Devices > USB Devices Menu Is Empty Details Some recently released Linux distributions are not mounting USBFS to /proc/bus/usb. The virtual machine's USB back end uses this to detect USB Devices that are attached to the host.

howtos:wget

2007-07-17T23:38:19+02:00

Add the following lines to your environment: export http_proxy="http://192.168.1.1:3128" export ftp_proxy="http://192.168.1.1:3128" Now, start wget with some enhanced options: wget --proxy-user "Domain\JohnUser" --proxy-passwd "SooooSecret" http://download.ubuntu.com/ubuntu.iso You can create an alias to save that configuration, although it may be a security risk to save a passwd inside it:

howtos:xorg.conf

2008-07-26T21:01:57+02:00

Can also be configured through: sudo dpkg-reconfigure xserver-xorg Remember to install 915resolution and configure /etc/default/915resolution. Put in what resolution you want. Get the parameters from: 915resolution -l # /etc/X11/xorg.conf (xorg X Window System server configuration file) # # This file was generated by dexconf, the Debian X Configuration tool, using # values from the debconf database. # # Edit this file with caution, and see the xorg.conf(5) manual page. # (Type "man xorg.con…