02-18-2013
have a look at this
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1. UNIX for Advanced & Expert Users
OK so I wanted to know how does grep outputs to the pipe and how sort reads from it. So I run a strace over "grep blah myfile | sort" and this is what I got:
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Hi,
does anyone know the equivalent command of the following in AIX :
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Process 15033 attached - interrupt to quit
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11:28:06 getrusage(RUSAGE_SELF, {ru_utime={2270, 615813}, ru_stime={0, 634903}, ...}) = 0
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LEARN ABOUT DEBIAN
gpiv_aint
GPIV_AINT(1) General Commands Manual GPIV_AINT(1)
NAME
gpiv_aint - Calculates mean image intensity at each interrogation area.
SYNOPSIS
gpiv_aint [-h | --help] [-p | --print] [-s | --second] [-V | --verbose] [-v | --version] filename
DESCRIPTION
For each Interrogation Area of an image, gpiv_aint calculates the mean image intensity. Depending on the settings of the interrogation
scheme, the Interrogation Area's may be shifted with magnitude of the piv estimators (if they exist) or the image may be deformed before
the intensity is calculated.
This program uses the IMG, PIV and POST parameters. The default settings may be overruled by the command line options, as explained below.
Options
-h | --help
On-line help.
-p | --print
Prints parameters to stdout.
-s | --second
Calculates the image intensitites for the second image frame in case of double-frame image pairs.
-V | --verbose
Prints data of interrogation area's and resulting mean.
-v | --version
Print version information on standard output, then exit successfully.
filename
Full name of the image file. Image format might be: png, raw binary (.r), hdf5 (.hdf), gif, tif, bmp or pgm. The piv estimators are
read from filename.piv The settings are written to filename.par. output will be stored in filename.ain.
SEE ALSO
gpivtools
NOTES
The program uses netpbm.
AUTHOR
Gerber Van der Graaf
7 November 2006 GPIV_AINT(1)