Ubuntu 12.04: Font Install/Uninstall

Install with Terminal

1. Make .font directory in your home directory

    $ mkdir .font

2. Download and put font file or files in the .font directory (e.g. Monaco_Linux.ttff)

    $ mv Downloads/Monaco_Linux.ttf.font

3. Register the font

    $ sudo fc-cache -f -v

3. Confirm the install

    $ fc-list | grep Monaco

Install with GUI

http://howtoubuntu.org/how-to-install-fonts-in-ubuntu/

Uninstall

1. Delete font file (e.g. Monaco.Linux.ttf)

    $ rm Monaco_Linux.ttf

2. Unregister the font

    $sudo fc-cache -f -v

3. Confirm the uninstall

    $ fc-list | grep Monaco

It's better not to install custom fonts to "/usr/share/fonts".

vim issue on ubuntu 12.04

Vim's icon was not shown on the global menu, and got an error when launching gvim from Terminal.

Workaround:
http://askubuntu.com/questions/132977/how-to-get-global-application-menu-for-gvim

VMwaretools won't work after kernel update - Ubuntu 12.04

It seems necessary to manually build kernel modules.
Environment: VMware Fusion 4.1.3, Ubuntu 12.04

Reference:
http://kb.vmware.com/selfservice/microsites/search.do?cmd=displayKC&docType=kc&docTypeID=DT_KB_1_1&externalId=1008973

Installing GUI to Ubuntu Server

How to install GUI
ServerGUI
https://help.ubuntu.com/community/ServerGUI

Reinstallation of VMware tools is necessary after installing GUI to Ubuntu Server.
Reinstalling VMware tools
http://kb.vmware.com/selfservice/microsites/search.do?cmd=displayKC&externalId=1022525

VIM is able to edit a remote file.

$ vim ftp://SERVER_NAME//DIRECTORY_NAME/FILE/NAME

"//" is used between SERVER_NAME and DIRECTORY_NAME

Arp cache aging time

Cisco routers
    4 hours
Cisco switches
    5 min
Windows Server 2003 and before
    2 min ( 10 min, if the address is reused )
Windows Vista and after
    Between 15 sec and 45 sec (random)
Linux box
    Various aging time

Switches are able to learn destination MAC addresses from client stations' arp request/query (because switches have longer aging time than client hosts). Those time differences keep them from flooding.

Refferences for Windows box
View the Address Resolution Protocol (ARP) cache
http://technet.microsoft.com/en-us/library/cc786759%28v=WS.10%29.aspx

Description of Address Resolution Protocol (ARP) caching behavior in Windows Vista TCP/IP implementations
http://support.microsoft.com/kb/949589