Difference between revisions of "User:Scott/06"
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| Line 129: | Line 129: | ||
==Generate keys== | ==Generate keys== | ||
| − | + | ===on local machine do:=== | |
| + | ssh-keygen -t rsa | ||
| + | ~/.ssh/id_rsa (private key) | ||
| + | ~/.ssh/id_rsa.pub (public key) | ||
| − | + | ===copy "Public Key" ---> To Remote Server=== | |
| − | + | scp ~/.ssh/id_rsa.pub user@remote:~/.ssh/my_key | |
| − | + | append id_rsa.pub to | |
| − | + | ~/.ssh/known_hosts | |
| − | ~/.ssh/known_hosts | ||
| + | by entering: | ||
ssh-copy-id username@remotehost | ssh-copy-id username@remotehost | ||
Revision as of 23:53, 24 November 2011
Laptops -------------------------------- Home Page user:scott Tech Support user:scott/02 Dir & Files user:scott/03 Network user:scott/04 Troubleshoot user:scott/05 Laptops user:scott/06 Resources user:scott/07 Notes user:scott/08
Laptop_Eval
Battery
BatteryTest
batterytest rm bat_mon
Bat Pop-up Warning
gconf-editor /apps/gnome-power-manager/notify/low-capacity (un-check)
Battery Statistics
cat /proc/acpi/battery/BAT?/{info,state}
watch -n3 -d cat /proc/acpi/battery/BAT1/{info,state}
Hit tab on BAT if necessary
Monitor/WiFi on/off
- Fn + F3, F4, F5, F8, or F9
"F" key - "CRT/LCD" "F" key - "Broadcast Signal"
Hibernation VS suspending
Hibernation is unreliable, It writes to a swap partition reserved for system caching and temporary files.
It writes the operating system's current state to disk; all of its environmental parameters, programs, processes, etc. Frequently, there won't be enough disk space to store the computer's state preventing it from successfully returning from hibernate.
suspending
Suspending involves the operating system writing its state to the system RAM which is faster and generally more reliable, although it draws a little bit of power in order to keep the information stored in the RAM.
- wiki.ubuntu.com Lucidi8xxFreezes
- http://wiki.freegeek.org/index.php/Laptop_Graphics
SSH to Talon
transfer to foyer, and then to talon.
$ ssh-keygen
$ ssh scott@foyer.freegeek.org - Debug: $ ssh -vvv scott@foyer.freegeek.org 2> ssh-debug.out
$ ssh scott@talon $ ls /usr/local/laptop-eval/ $ sftp://scott@talon/home/scott/laptop-eval
Secure-Copy from local-host to scott@foyer
$ tar zvcf scott-laptop-photos.tar.gz /path/to/pictures $ scp scott-laptop-photos.tar.gz scott@foyer.freegeek.org:~
Secure-Copy from scott@foyer to scott@talon
$ scp scott-laptop-photos.tar.gz talon:/usr/local/laptop-eval/photos/
SSH Fundamentals
Install SSH
sudo apt-get install openssh-client sudo apt-get install openssh-server
Test ssh install
ssh localhost
configure the OpenSSH server
/etc/ssh/sshd_config man sshd_config
copy the original file and protect it from writing
sudo cp /etc/ssh/sshd_config /etc/ssh/sshd_config.original sudo chmod a-w /etc/ssh/sshd_config.original
Configure sshd_config
gksudo gedit /etc/ssh/sshd_config
add the following two directives to the end of the file
PermitRootLogin no AllowUsers USERNAME #Port 22 Port 2222 #PubkeyAuthentication yes PubkeyAuthentication yes #Banner /etc/issue.net Banner /etc/issue.net
start/stop/restart sshd
sudo /etc/init.d/ssh start sudo service ssh start
sudo /etc/init.d/ssh stop sudo service ssh stop
sudo /etc/init.d/ssh restart sudo service ssh restart
Authentication
- SSH keys allow authentication between two hosts without the need of a password
Generate keys
on local machine do:
ssh-keygen -t rsa ~/.ssh/id_rsa (private key) ~/.ssh/id_rsa.pub (public key)
copy "Public Key" ---> To Remote Server
scp ~/.ssh/id_rsa.pub user@remote:~/.ssh/my_key
append id_rsa.pub to ~/.ssh/known_hosts by entering: ssh-copy-id username@remotehost