ref
this is horrible
the Chinese authorities decided to give up
even though people still alive inside
which only explained one thing
China is a country doesn't regard human rights a lot of times
5/25/2008
5/20/2008
annoying softwares :P
ref
it seems that the author is being annoyed by a lot of auto-update stuff
apparently he doesn't know how to turn those off which is feasible
according to his point of view
luckily I didn't suffer from most of them since I'm using Ubuntu
but the only thing I can't get rid of is the slow, huge resource consumed Adobe Professional
I can't find relevant good software to replace it
- Adobe Reader
- Apple update
- Windows Update
- RealPlayer
- Java update
- yahoo toolbar
- Norton Antivirus
- Preinstalled software bundles: Sony Vaio
- Outlook/Exchange
- Flash
it seems that the author is being annoyed by a lot of auto-update stuff
apparently he doesn't know how to turn those off which is feasible
according to his point of view
luckily I didn't suffer from most of them since I'm using Ubuntu
but the only thing I can't get rid of is the slow, huge resource consumed Adobe Professional
I can't find relevant good software to replace it
5/07/2008
5/04/2008
5/03/2008
5/02/2008
CITES port list
ref
| function | port | |
|---|---|---|
| SSH, SFTP | Secure text & file transfer | 22 |
| Telnet | Text transfer | 23 |
| Mail (SMTP) | Email transfer | 25 |
| HTTP | Web pages | 80 |
| POP3 | Email transfer | 110 |
| IMAP | Email transfer | 143 |
| HTTPS | Secure web pages transfer | 443 |
| RDP | Windows remote desktop | 3389 |
| VNC | Apple remote desktop | 5900 |
| Alternative HTTP | Web server | 8080 |
| DNS | IP information | 53 |
| finger | User information | 79 |
| LDAP | Directory services | 389 |
| NFS | Sun networked file sharing | 2049 |
| IRC | Internet chat | 6660~9 |
5/01/2008
CS 241 review
# pipe:
- a pipe is a FIFO queue allowing two processes to communicate
- read, write request will be blocked if the pipe is empty or full
- owner/group/other: eg. 664: owner+group can read and write, other can read
- read/write/exec(4/2/1): eg. read + exec = 5, read+write=6
- interrupt is a mechanism to improve processing efficiency
- concurrency is the sharing of resources in the same time frame
- techniques to deal with events happened at unpredictable time or in unpredictable order
- address space can be larger than physical address(MainMEM as $ to disk)
- simplify MEM management
- protect address space for each process won't conflict with the other