gnubby issues
asks to unplug replug and that doesn’t work: sudo apt-get remove gnome-keyring
Category Archives : Uncategorized
How to: Get Spotlight processes back under control when CPU usage goes crazy
If you’re finding that your Mac fans are running a lot more than they used to, you might want to check out whether a couple of Spotlight processes are consuming more than their fair share of CPU cycles. Ever since the latest Mavericks update, I found that my MacBook Pro seemed to be running hot […]
sina weibo rss autopost
Seems like sina weibo removed or is hiding their rss -> auto post functionality from their settings page. Well, the link to do that is here: http://www.weibo.com/tool/bloglink
system config in ubuntu as root
sudo gnome-control-cener
windows not showing printers (e.g. you can’t print)
Make sure BLUETOOTH (of all things) service is enabled.
Ubuntu (and other flavors of linux?) disconnects after a while
My ubuntu disconnects after a while (a few minutes), after it working perfectly. I invariably had to do a “/etc/init.d/networking restart”. Not only can I not ssh to it (or vnc via ssh tunneling per my previous post), but existing ssh connections get disconnected with a “broken pipe” error (which tend to just mean it’s […]
ssh tunneling and vnc
vnc is insecure by nature. Thus, use it through ssh tunneling: ssh -L 999:localhost:5900 <—on local host port 999, listen for local connections, and “bind it to remote host’s localhost:5900 (remote host’s localhost = remote host). Now, vnc to localhost port 999. It’ll go through ssh’s port 22.
sed to remove new line
sed ‘s/n//g’ <–does not work Because sed reads input a line at a time, and thus, won’t see n See http://backreference.org/2009/12/23/how-to-match-newlines-in-sed/
add people to sudo list
edit /etc/sudoers or whatever softlink it points to. You can do so by: 1. (dangerous way, NOT recommended) chmod the sudoers file. MAKE SURE YOU DO THIS AS ROOT AND NOT SUDO CHMOD, since this will lock you out (sudoers file need to be at 440 permission in order for sudo to work, i.e. once […]
Setup ssh keys between machines so you can connect without password
Put machine A’s ~/.ssh/id-rsa.pub’s content in machine B’s ~/.ssh/authorized_keys You can do so with: ssh-copy-id -i ~/.ssh/id_rsa.pub user@<machine b’s hostname> by the way, the id-rsa.pub can be created with ssh-keygen.