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Ubuntu Configurations / Tweaks / Tips and Tricks


Adding/removing services in Ubuntu

Tested on Ubuntu 8.04 / Ubuntu 8.10 / Ubuntu 9.04 / Ubuntu 9.10

sudo update-rc.d -f <service> add
sudo update-rc.d -f <service> remove

System Information

Getting Full System Information

Dmidecode reports information about your system's hardware as described in your system BIOS according to the SMBIOS/DMI standard (see a sample output). This information typically includes system manufacturer, model name, serial number, BIOS version, asset tag as well as a lot of other details of varying level of interest and reliability depending on the manufacturer.

sudo dmidecode -s system-manufacturer
sudo dmidecode -s system-product-name
sudo dmidecode -s system-version
sudo dmidecode

Getting DSDT (Differentiated System Description table)

  1. Install acpidump from the pmtools package available at
  2. Install iasl from the ACPICA downloads at Intel's website
  3. Dump the binary DSDT with
    acpidump -b -t DSDT -o DSDT.aml
  4. Disassemble the DSDT with
    iasl -d DSDT.aml
USB Drive Configuration

Changing drive labels for drives with ext2, ext3, ext4 filesystems

sudo e2label <device> <label>

apt-get Package Manager

Cleanup the apt-get cache to free space

sudo apt-get clean