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Every developer should know this – and its a free course… for what are you waiting? Click Me

Lets image you are working on a coreboot port for some mainboard and you are a very glad guy cause you have a jtag interface or something similar and you notice a hang, which could be caused by a never ending loop or some other mysterious stuff – all you know is the current instruction pointer. objdump -S ./build/cbfs/fallback/coreboot_ram.elf and search for the address of the instruction pointer – may it help you to figure out whats going on 🙂

Sometimes it is needed to compare two filesystems, which can be done quite easily: diff -rq /mnt/fs1 /mnt/fs2

Image you destroyed your MBR sector of your hard drive/flash device and you are not able to load grub. You can easily fix this issue from an other Linux based computer. Simply run the following commands: mount /dev/sda1 /mnt/ mount -t proc none /mnt/proc mount -o bind /dev /mnt/dev chroot /mnt/ /bin/bash /usr/sbin/grub-install –recheck –no-floppy /dev/sda With this routine it it is also possible to fix UUID problems.

Um eine breitere Masse zu erreichen, wird der Blog geswitcht.. Starting with this second the whole blog will be in English and it will cover a broader range of topics…