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Full Discussion: Recommended Solutions for Mass Command Execution
Special Forums Cybersecurity Recommended Solutions for Mass Command Execution Post 302330160 by jim mcnamara on Tuesday 30th of June 2009 10:54:13 AM
Old 06-30-2009
SOX, uggh! best describes it.

We have the following for jobs that are repeated periodically:
a job in root cron on each remote node that runs once per (U pick it) minute interval. It reads a command file. The file format is something like this:
Code:
1  -a -b arg1
23

The file lives in a protected sftp only folder. The 1 refers to #1 in a list of commands known to the cron script.

The cron script decodes the one, adds the arguments. It then goes thru submitting (at now) each job request in the file. The command file is then zeroed. The cron job keeps a log of when & what was submitted.

The 'control panel' is on a single box. It's job is to build the command request files and scp them to the remote box(es) using the protected account. It keeps track of pending requests so that an unprocessed request file on a remote node does not get overwritten.
There is also an 'adhoc' request screen.

In practice the command file sent to remote boxes is encrypted. On a per remote box basis. And there are validation fields as well. This is to prevent spoofing.
We have 400+ Linux servers, 20+ HP-UX boxes and some oddballs.
 

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LEARN ABOUT XFREE86

mixer

MIXER(1)						  The Canonical Csound Reference						  MIXER(1)

NAME

       mixer - Mixes together a number of soundfiles. .

DESCRIPTION

       Mixes together a number of soundfiles, starting at different times and with individual channel selection from the input files.

SYNTAX

	   mixer [OPTIONS ... ] infile [[OPTIONS... ] infile] ...

INITIALIZATION

       Flags:

       o   -A = Generate an AIFF output file.

       o   -W = Generate an WAV output file.

       o   -h = Generate an output file with no header.

       o   -c = Generate 8-bit signed_char sound samples.

       o   -a = Generate alaw sound samples.

       o   -u = Generate ulaw sound samples.

       o   -s = Generate short integer sound samples.

       o   -l = Generate long (32 bit) integer sound samples.

       o   -f = Generate floating point samples.

       o   -F arg = Specifies the gain to be applied to the following input file. If arg is a floating point number that gain is applied uniformly
	   to the input. Alternatively it could be a file name which specifies a breakpoint file for varying the gain for different periods.

       o   -S integer = Indicate at which sample to start to mix in the next input file.

       o   -T fpnum = Indicate at which time (in seconds) to start to mix in the next input file.

       o   -1 = Mix in channel 1 from next sound file.

       o   -2 = Mix in channel 2 from next sound file.

       o   -3 = Mix in channel 3 from next sound file.

       o   -4 = Mix in channel 4 from next sound file.

       o   -^ intx inty = Mix in channel x from next sound file as channel y in the output.

       o   -v = Verbose mode.

       o   -R = Continually rewrite the header while writing soundfile (WAV/AIFF).

       o   -H integer = Show a "heart-beat" to indicate progress, in style 1, 2 or 3.

       o   -N = Alert call (usually ringing the bell) when finished.

       o   -o fname = output file name (default: test.wav)

EXAMPLES

       The default values are

	       mixer -s -otest -F 1.0 -S 0

       For example

	       mixer -F 0.96 in1.wav -S 300 -2 in2.aiff -S 300 -^4 1 in3.wav -o out.wav

       This creates a new sound file with a constant gain of 0.96 from in1.wav with the second channel of in2.aiff mixed in after 300 samples and
       channel 4 of in3.wav outpout as channel 1 after 300 samples.

CREDITS

       Author: John ffitch

       1994

AUTHORS

       Barry Vercoe
       MIT Media Lab

	   Author.

       Dan Ellis
       MIT Media Lab,
		 Cambridge
		 Massachussetts

	   Author.

COPYRIGHT

5.10								    08/01/2011								  MIXER(1)
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