Archive for January, 2007

Useful Commands 

Parse out non-commented lines from a file:
grep ‘^[^#]‘ filename
How to test an Internet connection through a browser:
telnet google.com 80
Trying 64.233.167.99…
Connected to google.com (64.233.167.99).
Escape character is ‘^]’.
GET / HTTP/1.0
HTTP/1.0 200 OK
Check backporting:
rpm –changelog -ql packagename | grep CAN-xxxxx
Verify RPMs:
rpm -Va
Options:

S file Size differs
M Mode differs (includes permissions and file type)
5 MD5 sum differs
D Device major/minor [...]

PageRank assigned 

So my two sites that I started up at approximately the same time (indexed by Google on September 26th, 2006) were both assigned a PageRank (PR) today approximately four months after being indexed. I always check it and last night I didn’t have any PR on either site and today, this one (utahsysadmin.com) was [...]