squid proxy gateway based downloaded object

#  TAG: tcp_outgoing_address
#       Allows you to map requests to different outgoing IP addresses
#       based on the username or sourceaddress of the user making
#       the request.
#
#       tcp_outgoing_address ipaddr [[!]aclname] ...
#
#       Example where requests from 10.0.0.0/24 will be forwareded
#       with source address 10.1.0.1, 10.0.2.0/24 forwarded with
#       source address 10.1.0.2 and the rest will be forwarded with
#       source address 10.1.0.3.
#
#       acl normal_service_net src 10.0.0.0/255.255.255.0
#       acl good_service_net src 10.0.1.0/255.255.255.0
#       tcp_outgoing_address 10.0.0.1 normal_service_net
#       tcp_outgoing_address 10.0.0.2 good_service_net
#       tcp_outgoing_address 10.0.0.3 

Reference here 

PDFs: imagemagick & poppler

I was looking for a way to extract images from pdfs to know the resolution of each embeded image.
poppler has a tool named "pdfimages" to extract images from the pdf, usage:

pdfimages -j file.pdf img

Then, use tools from imagemagick to read characteristics of the images, usage:

display img.jpg

identify -verbose img.jpg

imagemagick let create a pdf file from jpg images, usage:

convert imageA.jpg imageB.jpg file.pdf pdf

wmic for Linux

Compiling WMIC for Linux (Without Installing Samba)

http://semafour.wordpress.com/2010/02/17/compiling-wmic-for-linux-without-installing-samba/

http://www.edcint.co.nz/checkwmiplus/

Tunning remote desktop

I just found a way to set default connection setting for clients...
Using Group Policies Editor, gpedit.msc

\Computer Configuration\Administrative Templates\Windows Components\Terminal Services\Printer Redirection

"Do not allow client printer redirection". Set it to Enable

PD. google "disable remote printers using group policies"