Hotmail losing email
You never got an email you were supposed to get in your hotmail account. Check Options (upper right hand corner’s dropdown) -> More Options -> Rules for SORTING new messages. See if any rules delete emails directly
ssh keys don’t work
After copying A’s id_rsa.pub’s content to destination machine B’s .ssh/authorized_keys if it still for some reason prompts you for password when you ssh from A to B, check B’s home directory permissions. It can’t be group writable. Try 744. (755 also works)
kill multiple processes on unix/linux/*nix
kill `ps -eaf | grep -i sg_file_xfr_client | awk ‘{print $2}’`
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/
Mysql: is not allowed to connect to this MySQL serverCsed by foreign host.
If you try to connect from a remote machine to a particular db and get the following: is not allowed to connect to this MySQL serverCsed by foreign host. (connect, as in telnet 3306) Need to set permissions, after logging onto mysql prompt as root: mysql -u root (supply password, if any) GRANT ALL PRIVILEGES […]
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.