Monthly Archives: November 2015
Java Networking with Socket and DatagramSocket
Illustrator
Ulo
SYSLINUX / ISOLINUX Bootloader
X11 connection rejected because of wrong authentication
X11 connection rejected because of wrong authentication after sudo to another user
“su” with error “X11 connection rejected because of wrong authentication”
$ xauth list | grep unix`echo $DISPLAY | cut -c10-12` > /tmp/xauth $ sudo -s # xauth add `cat /tmp/xauth`
APU2B4 and Ubuntu Server 15.10
Disk /dev/sdc: 3.7 GiB, 3980394496 bytes, 7774208 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: dos Disk identifier: 0x672847fd Device Boot Start End Blocks Id System /dev/sdc1 * 0 1294335 647168 0 Empty /dev/sdc2 261440 265983 2272 ef EFI (FAT-12/16/32) Command (m for help): q
$ file -sL /dev/sdc1 /dev/sdc1: # ISO 9660 CD-ROM filesystem data 'Ubuntu-Server 15.10 amd64' (bootable) $ mount /dev/sdc1 /mnt mount: /dev/sdc1 is write-protected, mounting read-only ==> use unetbootin
How to repair an SD card which shows incorrect size?
SD Card interpreted as wrong size
# cat /proc/partitions # cfdisk /dev/sdc => Type 0b (W95 FAT32) # mkfs -t vfat /dev/sdc1
SeaBIOS (version rel-1.8.0-181-g0af5958) XHCI init on dev 00:10.0: regs @ 0xfeb22000, 4 ports, 32 slots, 32 byte contexts XHCI extcap 0x1 @ feb22500 XHCI protocol USB 3.00, 2 ports (offset 1), def 0 XHCI protocol USB 2.00, 2 ports (offset 3), def 10 XHCI extcap 0xa @ feb22540 Found 2 serial ports Searching bootorder for: /pci@i0cf8/*@14,7 EHCI init on dev 00:13.0 (regs=0xfeb25420) Searching bootorder for: /rom@img/memtest Searching bootorder for: /rom@img/setup Found sdcard at 0xfeb25500: SD card SD04G 3796MiB XHCI no devices found Initialized USB HUB (0 ports used) All threads complete. Scan for option roms PCengines Press F10 key now for boot menu: Select boot device: 1. SD card SD04G 3796MiB 2. Payload [memtest] 3. Payload [setup] Searching bootorder for: HALT drive 0x000f5850: PCHS=0/0/0 translation=lba LCHS=964/128/63 s=7774208 Space available for UMB: c1000-ef000, f0000-f5850 Returned 262144 bytes of ZoneHigh e820 map has 7 items: 0: 0000000000000000 - 000000000009f800 = 1 RAM 1: 000000000009f800 - 00000000000a0000 = 2 RESERVED 2: 00000000000f0000 - 0000000000100000 = 2 RESERVED 3: 0000000000100000 - 00000000dffae000 = 1 RAM 4: 00000000dffae000 - 00000000e0000000 = 2 RESERVED 5: 00000000f8000000 - 00000000fc000000 = 2 RESERVED 6: 0000000100000000 - 000000011f000000 = 1 RAM enter handle_19: NULL Booting from Hard Disk... Booting from 0000:7c00 ISOLINUX 6.03 20150813 EHDD Copyright (C) 1994-2014 H. Peter Anvin et al Loading bootlogo... Initializing gfx code... graphics initialization failed Error setting up gfxboot boot:
Undefined video mode number: 314 Press <ENTER> to see video modes available, <SPACE> to continue, or wait 30 sec Mode: Resolution: Type: 0 F00 80x25 CGA/MDA/HGC Enter a video mode or "scan" to scan for additional modes:
Old => wrong syslinux.cfg
Installation von Ubuntu 14.04 auf PC Engines APU
APU + Ubuntu 14.04 LTS – install via serial console
Better syslinux.cfg
Re: Install Debian Squeeze on Alix 2d2 over Serial Console
label ubnentry1 menu label ^Install kernel /install/netboot/ubuntu-installer/amd64/linux append initrd=/install/netboot/ubuntu-installer/amd64/initrd.gz vga=788 --- quiet
label ubnentry1 menu label ^Serial Install kernel /install/netboot/ubuntu-installer/amd64/linux append priority=low console=ttyS0,115200n8 video=off initrd=/install/netboot/ubuntu-installer/amd64/initrd.gz --
SSD doesn’t work => use SD card as boot loader?
syslinux.cfg: label ssd com32 /isolinux/chain.c32 append hd0 boot error: /isolinux/chain.c32: not a COM32R image boot:
# D-I config version 2.0 CONSOLE 0 SERIAL 0 115200 0 default menu.c32 prompt 0 menu title UNetbootin timeout 100 label unetbootindefault kernel /install/netboot/ubuntu-installer/amd64/linux append console=ttyS0,115200n8 video=off \ initrd=/install/netboot/ubuntu-installer/amd64/initrd.gz \ tasks=standard pkgsel/language-pack-patterns= \ pkgsel/install-language-support=false --
# D-I config version 2.0 CONSOLE 0 SERIAL 0 115200 0 default menu.c32 prompt 0 menu title UNetbootin timeout 100 label unetbootindefault kernel /install/netboot/ubuntu-installer/amd64/linux append console=ttyS0,115200n8 video=off initrd=/install/netboot/ubuntu-installer/amd64/initrd.gz tasks=standard pkgsel/language-pack-patterns= pkgsel/install-language-support=false --
GRUB2 Serial Console
How to install Ubuntu using serial console
Grub2: Booting from a serial console
# Uncomment to disable graphical terminal (grub-pc only) GRUB_TERMINAL=console GRUB_SERIAL_COMMAND="serial --unit=0 --speed=115200 --word=8 --parity=no --stop=1" update-grub2
Getty with systemd
systemd for Administrators Part XVI: Gettys on Serial Consoles (and Elsewhere)
How to get kernel messages on serial console on a systemd system?
How to invoke kernel with serial console?
To make use of a serial console, just use console=ttyS0 on the kernel command line, and systemd will automatically start a getty on it for you.
VRRP and FreeVRRPd
Netgraph on FreeBSD
Buchhaltung / Rechnungswesen / Accounting
Bundesgesetz über die direkte Bundessteuer (DBG)
Schweiz
Internaltional
GNU Cash
The GNU Accounting Utilities
Top 10 Linux financial tools
- Gnucash
- KMyMoney
- Moneydance
- Appgen MyBooks
- Nolapro
- Linux Business Accounting Systems BasicBooks
- Quasar Accounting
- SQL-Ledger
- Rapid Graphing Software for Technical Analysis of Stocks and Commodities
- Crossover Office
5 Best Open Source Accounting Software for Small Business
- GnuCash
- SQL Ledger
- XTuple PostBooks
- Compiere
- Turbo Cash
Kontierungsrahmen / Kontenrahmen
Kontierungsrichtlinien Kontenrahmen KMU (PDF)
KONTIERUNGSRICHTLINIE KMU KONTENRAHMEN (PDF)