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nmap get all active online ips from specific network
scan whole specific network for active online ips

let the cow suggest some commit messages for you

Set laptop display brightness
Run as root. Path may vary depending on laptop model and video card (this was tested on an Acer laptop with ATI HD3200 video). $ cat /proc/acpi/video/VGA/LCD/brightness to discover the possible values for your display.

Leap year calculation

Files extension change
Changing a file extension to a new one for all files in a directory.

Resolution of a image
You can use the -format switch to get the size of the image. Replace "logo:" with your image.

Show interface/ip using awk
Interfaces like lo can be omitted from the beginning, there are probably better ways of doing this, i'm a noob at awk.

encode HTML entities
Encodes HTML entities from input (file or stdin) so it's possible to directly past the result to a blog or HTML source file.

Advanced python tracing
Trace python statement execution and syscalls invoked during that simultaneously

back ssh from firewalled hosts
host B (you) redirects a modem port (62220) to his local ssh. host A is a remote machine (the ones that issues the ssh cmd). once connected port 5497 is in listening mode on host B. host B just do a ssh 127.0.0.1 -p 5497 -l user and reaches the remote host'ssh. This can be used also for vnc and so on.


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