Linux, programming and more
You have a IP-Address from a PC, and you want to know which web-sites ware visited from this PC.
Grep for PCs IP-Address in the access log of your proxy box.
As result you will get a list with visited sites.
1 | grep 172.16.0.5 /var/log/squid3/access.log | cut -d" " -f7 | sort -u | less |
I decided to put a nginX (pronounced as ‘Engine X’) as my primary webserver to reduce the server load and improve performance.
Nginx can only handle static content (CSS, simple HTML, and static files) l have to proxy incoming dynamic requests to another server, in my case Apache2 with PHP5 as suExec/ Fcgid.
Important hardware monitoring – check HDD temperature:
Install (Debian /Ubuntu way):
1 | aptitude install hddtemp |
Check it:
1 2 3 4 | hddtemp /dev/sda1 # Output: # /dev/sda1: ST31500341AS: 42°C # /dev/sdb1: ST31500341AS: 38°C |
1 2 3 | hddtemp -n /dev/sda1 Output: # 42 |
Sometimes I have to share some files over HTTP and I have no time to install apache or lighty. Everyone who has python can use SimpleHTTPServer module which can be started from command line.
Every request to your files will be logged to the terminal.
Start web server in some directory which should be shared:
1 2 | [root@hexa-core webserver]# python -m SimpleHTTPServer 88 Serving HTTP on 0.0.0.0 port 88 ... |
You can change the port!
Logs:
1 | pD4B88C85.dip.t-dialin.net - - [13/Jan/2011 21:57:01] "GET / HTTP/1.1" 200 |
Sometimes if I work with really huge MySQL databases, I miss the progress bar of the restore progress.
I found a little solution to see the progress 
Description:
pv allows a user to see the progress of data through a pipeline, by giving information such as time elapsed, percentage completed (with progress bar), current throughput rate, total data transferred, and ETA.
1 2 | pv database.sql | mysql -D databasename -pyourpassword 948.4MB 0:00:03 [22.7MB/s] [=====> ] 21% ETA 0:00:11 |