Free ping 1.13 software for linux

Web Ping is a program for testing your internet connection.

Web Ping is a simple application to test an internet connection to a perticular site. I created this application after my work moved locations and half our network stayed in the old building and the other half moved with us to the new location.

A flaky (significant point) VPN was set up to keep the two connected. Since a couple of the unmoved servers were of interest to me, I keeped checking to see if they were still accessable with the ping command before doing any serious work with them.

A quick and pathetic Google resulted in no other program that meet my needes, so I wrote one.

Insted of doing an actual network ping, Web Ping tests a connection by downloading a web page on a given server. The size of the page and time are stored in memory and the times are graphed. In this way, sites that block network a ping can still be tracked.

Web Ping also keeps track of the largest and smallest download times per session and also tracks the max and min values currently on the graph. Times of interest are graphed in a color which represents if it is a max or a min. (see figure one). The history tab also lists all the max values as they have been recevied.

A running average is also calculated with each download. The files downloaded are not processed or stored in any way. This prevents any security problems that can normaly happen in a web browser enviroment. The only two pecies of information retained about a downloaded file is the size and time.

Usage:

There are two ways to use Web Ping, GUI or CLI mode. The simplest of the two modes is CLI. Web Ping can be started in CLI mode by passing a url to the jar file in a command line interface like this: "java -jar WebPing.jar http://localhost". Web Ping will automaticly start getting statistics on the requested url, printing results to the screnn.

To quite, press q and then then ENTER key. CLI allows the user to Most people will probably want to use the GUI mode which has a history graph and allows the user to start and stop the session.

The best way to run Web Ping is in GUI mode. GUI mode allows the user start and stop the ping process at will and to change the site that is pinged. Users can also see more information about about the history of the pings and view max values and min values easily. There are three tabs on the top of the page, the first is the application, second is the history list, and the last give information about the application.

ROSInfo is a simple tool for monitoring signal levels, traffic, and network latency of x86 machines, RouterBoards, and other devices running Mikrotik RouterOS.

The project was designed to be used with Mikrotik RouterOS 2.9 and is being developed and tested on a large network with many Mikrotik routers.

Currently supported and tested are all versions of Mikrotik RouterOS 2.9.

PingNode will ping a list of network devices at a specified interval. PingNode will then create a record in a MySQL database for each ping indicating that the node was there or not there.

It will also send an email if the node is found to be down. The index.php page contains a list of monitored hosts with current status.

A detail page contains historical data for a given host.

ToDo:

Seperate table for hosts
Query data by date range
Dynamic host add/delete/modify
Custom Reports
disk space monitor
Process/Service monitor

pgmfindclip project can automatically find a clipping border for a sequence of pgm images (a fine companion for transcode on Linux).
This tool tries to find a suitable clipping border for a series of gray images. It is very useful to automatically extract clipping values for transcoding a movie if the source frame is encoded with black bars.
A border around an image is defined by a rectangular and homogenous valued area extending from each edge of the image (e.g. the black bars around a movie frame). For each image the largest clip border is determined and the smallest common region of the image series is returned. Empty images or images with no valid clipping region are ignored.
To cope with noisy regions in the black border areas, the region finding algorithm does not simply cut away all regions with purely zero values, but it uses a threshold in the absolut gradient sum along rows and columns as a hint for the begin of real image contents.
You need a frame processing tool like transcode to actually perform the clipping operation.
The program assumes that all images have the same size!
Installation:
Compile the source code with the given Makefile and place the resulting binary in your PATH.
Usage:
You first have to generate a gray image sequence from your movie. The combination of the -K and -y ppm switches in transcode is very useful in this situation:
transcode .... -K -y ppm -o sample
It is very important to extract frames from different regions of the movie. It is usually a bad idea to extract the first couple of frames of a movie since they often contain a black screen or logos that would lead to wrong clipping borders. A better and still efficient solution is to pick all the files of the movies title set (the VTSxxx.VOB files) and use the VOB mode of transcode to extract a single frame from each file (bash syntax!):
for a in *.vob; do transcode -i $a -x vob -z -K -y ppm -o sample -c 32-33 ; done
Note that I skip a couple of frames (here 32) because decoding of movie frames at the beginning of a vob file is not always possible correctly. (The set of VOB files is a locigal unit but the files itself are only splitted due to file/filesystem size constraints (=1GB)). Also note the -z option to flip the frames.
Then you can run pgmfindclip with:
pgmfindclip sample*.pgm
The clipping border is returned as a list of 4 comma separated values:
< top >,< left >,< bottom >,< right >
This is the correct syntax for the clipping option (-J) of transcode:
CLIP=`pgmfindclip sample*pgm`
transcode .... -j $CLIP ....
Constrain the result
pgmfindclip has various options to constrain the calculated clipping result. You can force that the resulting image is a multiple of a given factor. Also the border can be rounded to another factor. This is useful if you want to process the clipped image with a video coder that imposes such restrictions on the input format:
Give the modulo for the target image size with the -f option. The modulo for the border is given with -b. pgmfindclip will issue an error message if the combined aligning of frame and border is not possible. The frame size will be reduced to meet the restrictions and thus the border will be enlarged. You can swap this behaviour with the -e (expand) option. Then the frame might be larger than the determined clip region.
pgmfindclip -f 16 sample*.pgm
This example enforces a modulo of 16 in both directions.
More Features
- If the black bars are not zero valued but have a value above zero then the gradient is very large at the border of the image. You can skip this test by specifying the -o (offset) option. Then the search will start n rows/columns later.
- You can add a safety border to the calculated clipping region with the -s option. This is useful to skip bleeding artifacts at the border of scanned analog material.
- You can visualize the found clip border with the -w option. This option will write new PGM images (*-m.pgm) with the clip border drawn as an inverted rectangle in it.
Enhancements:
- added patch by Svante Signell (fixes a div by zero bug)

a2pdf project converts ASCII text to PDF format, with optional line/page numbering and Perl syntax highlighting.

Usage:

a2pdf [options] input.txt >output.pdf

Options:

a2pdf recognises the following command line options:

--help
Prints usage details and exits.

--doc
Displays full documentation and exits.

--version
Prints version number and exits.

--title
Sets the title to be included in the page header. If unspecified, the title will default to the name of the file which is being converted, or to STDIN if a2pdf is processing from standard input.

--timestamp
Boolean option - if set, the timestamp of the file to be converted will be included in the page header. This option is turned off by default.

--icon
Path to an image file which will be included as part of the header in the top left of each page. Image files may be in any format supported by PDF::API2.

--icon-scale
Scaling value for icon images, default is 0.25.

--header | --noheader | --notitle
Prints a header consististing of the page title, and optionally the timestamp and an image icon at the top of each page. This option is enabled by default, use "--notitle" or "--noheader" to disable.

--footer | --nofooter | --page-numbers | --nopage_numbers
Adds the current page number to the bottom of each page. This is enabled by default, use --nofooter or --nopage-numbers to disable.

--line-numbers | --noline-numbers
By default, line numbers will be included in the output PDF file. To disable this behaviour, use the --noline-numbers option.

--perl-syntax | --noperl-syntax
Enables or disables (default is enabled) Perl syntax highlighting. This feature requires that the Perl::Tidy module is installed.

--page-height
Page height in points. Default is 842 (A4).

--page-width
Page with in points. Default is 595 (A4).

--margins
--left-margin
--right-margin
--top-margin
--bottom-margin
Specifies the non-printable area of the page. The margin option will set all margins to the same value, however individual margins may be altered with the appropriate options. Values must be given in points. The default value for all margins is 48 points (0.75").

--font-face
Sets the font to use for the PDF file - currently this must be one of the PDF core fonts. The default font face is Courier.

--font-size
Font size in points, default value is 10.

--line-spacing
Line spacing in points, default value is the font size + 2.

--noformfeed
By default, any formfeed characters in the input stream will be processed and will act as expected, i.e. a new page will be started in the output PDF file. This can be disabled with the "--noformfeed" option which will cause all formfeed characters to be ignored.

Options may be given in any format recognised by the Getopt::Long Perl module, e.g. --name=value or --name value. Option names may be abbreviated to their shortest unique value.

If the input filename is not given, then a2pdf will expect to receive input from STDIN.

BSNMP ping is a module for bsnmpd which allows you to measure latency and reachability. It sends out ICMP packets to the configured hosts.

A history of received packets is maintained, and you can query via SNMP how many dropped packets, maximum/minumum latency and other stats for that history period.

As bsnmpd only runs on BSDs (seems that way), this will also be the case for bsnmp-ping.

EXAMPLES

The following example pings two hosts. The first gets pinged once per second, and keeps a history for 300 seconds. The second is pinged 5 times per second, and the history is kept for 30 seconds.

The following would be added to /etc/snmpd.config:

begemotSnmpdModulePath."ping" = "/usr/local/lib/snmp_ping.so"
%ping
pingHost.1 = "10.8.9.2"
pingInterval.1 = 100
pingHistory.1 = 300

pingHost.2 = "2.2.2.2"
pingInterval.1 = 20
pingHistory.1 = 150

Planets is a simple interactive program for playing with simulations of planetary systems, released under the GPL. The project runs on Linux and Windows, and could doubtless be ported to your favorite flavor of Unix.
Planets was originally designed for kids, in particular, for my then 4-year old nephew who is fascinated by astronomy. The user interface is aimed at being simple enough that a fairly young kid can get some joy out of it. But the adults who have used it have found it to be pretty fun as well.
The code is not bug-free, and Planets is missing some significant features. But its pretty stable and is a fun toy to play with. If you do download it, please drop me an email and tell me about your experience with it.
Main features:
- Saving and loading of universes
- Infinite undo (erase last action) and goback (return to point in time just after last action). This allows for undoing mistakes and replaying interesting configurations.
- Traces of planet trajectories
- Two ways of dealing with planet collisions:
- merges, where the colliding planets are merged into one planet, and
- bounces, where the colliding planets are bounced off each other elastically. This itself comes in two varieties:
- force bouncing, where the force between planets is made repulsive at close quarters.
- true bouncing, where simple pool-table physics calculations are made to determine when planets collide, and compute the appropriate bounce from said collision.
- kidmode, a mode where the focus is (mostly) locked on the application, and interesting changes are initiated by merely banging on the keyboard. This mode is aimed at 1-5 year olds.
- Center-of-mass following: it is possible to follow the center of mass of a subset of the planets. Thus, if you have a sun-moon-planet system, you can have the view automatically track the moon-planet pair.
- Can display kinetic, potential and total energy of the system.
- Both the gravitational constant and the gravitational exponent can be changed.
- There is a simple control panel that makes it possible to see and change the simulation options.
- Zooming, panning, and centering on the center of mass.