command tips

:~$ dpkg -L chromium-browser
sudo find  / -name grub.cfg
sudo dmidecode >info.txt;less info.txt
lspci |grep VGA
sudo vim /etc/sudoers
groups [OPTION]... [USERNAME]...
sudo usermod -a -G vboxusers wenbo
chkconfig
update-rc.d
sudo wget -r -p -np -k http://progit.org/

axel  -n 10  -vo .  http://xxx/xx.tar.gz