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Top Forums UNIX for Dummies Questions & Answers Want to remove all lines but not latest 50 lines from a file Post 302867809 by vbe on Friday 25th of October 2013 04:54:35 AM
Old 10-25-2013
I dont know... normally people would redirect in a file somewhere else (You dont have just that filesystem do you?) where space isnt an issue then overwrite...
Im saying that because most editing utilities would create a temorary file in /tmp or /var/tmp... if you are that stuck you will have to do some cleaning up first then

Last edited by vbe; 10-25-2013 at 08:49 AM.. Reason: typo hehe
 

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pfsinhdrgen(1)						      General Commands Manual						    pfsinhdrgen(1)

NAME
pfsinhdrgen - Create a pfs stream with different exposures defined by hdrgen script. SYNOPSIS
pfsinhdrgen <sample.hdrgen> DESCRIPTION
This program reads files defined in given hdrgen script and outputs them in a PFS stream. Each frame has a tag BV with corresponding brightness value (APEX standard). Larger BV corresponds to less exposure (darker image), necessary to capture a bright scene. The generated PFS stream is to be used with photo-metric calibration software and with generators of HDR images. HDRGEN script file is a plain text file in which each line contains: <path_to_an_image> <inverse_of_exposure_time_in_seconds> <aper- ture_size> <iso_speed> 0 In most cases it is convenient to use the jpeg2hdrgen program to create such a file automatically. In case it could not parse the exif information from jpeg files, it is necessary to create this file by hand. Below are the sample contents of such file: <--- cut here: sample.hdrgen /var/tmp/images/img08.jpg 4 2.8 100 0 /var/tmp/images/img09.jpg 58.8235 2.8 100 0 /var/tmp/images/img10.jpg 76.9231 2.8 100 0 /var/tmp/images/img11.jpg 322.581 2.8 100 0 /var/tmp/images/img12.jpg 400 2.8 100 0 <--- cut here: sample.hdrgen EXAMPLES
pfsinhdrgen sample.hdrgen | pfsview View exposures defined in sample.hdrgen script. SEE ALSO
jpeg2hdrgen(1) pfshdrcalibrate(1) BUGS
Please report bugs and comments on implementation to Grzegorz Krawczyk <gkrawczyk@users.sourceforge.net>. pfsinhdrgen(1)
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