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Top Forums Shell Programming and Scripting Convert ip ranges to CIDR netblock Post 303028386 by Corona688 on Sunday 6th of January 2019 03:56:35 PM
Old 01-06-2019
Quote:
Originally Posted by azdps
EDIT: Reason for segmentation fault solved

Okay I found this information reference OpenBSD awk vs gawk. It states "Gawk uses 53-bit unsigned integers, but OpenBSD awk uses 32-bit signed integers." This applies to the bitwise operations.

If I convert 128.0.0.0 to decimal the result is 2,147,483,648 which exceeds the maximum 32-bit signed integer value for variables 2,147,483,647 declared as integers. So it's clear now why the script that uses the native lshift, rshift, or bitwise operations is causing an awk segmentation fault with IP's greater than 128.0.0.0 and the script that uses the custom bit_lshift, bit_rshift, bit_or bitwise operations doesn't.

End of a long story =(
The only time segmentation fault isn't programmer error is when your RAM is faulty or someone pulled a disk they really shouldn't have. This isn't expected behavior, this is still a bug.
 

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ESREVERSE:(1)							   User Commands						     ESREVERSE:(1)

NAME
esreverse - reverse an es stream SYNOPSIS
esreverse [switches] <infile> <outfile> DESCRIPTION
TS tools version 1.11, esreverse built Nov 11 2008 17:15:47 Output a reversed stream derived from the input H.264 (MPEG-4/AVC) or H.262 (MPEG-2) elementary stream. If output is to an H.222 Transport Stream, then fixed values for the PMT PID (0x66) and video PID (0x68) are used. Files: <infile> is the input elementary stream. <outfile> is the output stream, either an equivalent elementary stream, or an H.222 Transport Stream (but see -stdout and -host below). Switches: -verbose, -v Output additional (debugging) messages -quiet, -q Only output error messages -stdout Write output to <stdout>, instead of a named file Forces -quiet. -host <host>, -host <host>:<port> Writes output (over TCP/IP) to the named <host>, instead of to a named file. If <port> is not specified, it defaults to 88. Implies -tsout. -max <n>, -m <n> Maximum number of frames to read -freq <n> Specify the frequency of frames to try to keep when reversing. Defaults to 8. -tsout Output H.222 Transport Stream -pes, -ts The input file is TS or PS, to be read via the PES->ES reading mechanisms -server Also output as normal forward video as reversal data is being collected. Implies -pes and -tsout. -x Temporary extra debugging information Stream type: If input is from a file, then the program will look at the start of the file to determine if the stream is H.264 or H.262 data. This process may occasionally come to the wrong conclusion, in which case the user can override the choice using the following switches. -h264, -avc Force the program to treat the input as MPEG-4/AVC. -h262 Force the program to treat the input as MPEG-2. TS tools version 1.11, esreverse built Nov 11 2008 17:15:47 Output a reversed stream derived from the input H.264 (MPEG-4/AVC) or H.262 (MPEG-2) elementary stream. If output is to an H.222 Transport Stream, then fixed values for the PMT PID (0x66) and video PID (0x68) are used. Files: <infile> is the input elementary stream. <outfile> is the output stream, either an equivalent elementary stream, or an H.222 Transport Stream (but see -stdout and -host below). Switches: -verbose, -v Output additional (debugging) messages -quiet, -q Only output error messages -stdout Write output to <stdout>, instead of a named file Forces -quiet. -host <host>, -host <host>:<port> Writes output (over TCP/IP) to the named <host>, instead of to a named file. If <port> is not specified, it defaults to 88. Implies -tsout. -max <n>, -m <n> Maximum number of frames to read -freq <n> Specify the frequency of frames to try to keep when reversing. Defaults to 8. -tsout Output H.222 Transport Stream -pes, -ts The input file is TS or PS, to be read via the PES->ES reading mechanisms -server Also output as normal forward video as reversal data is being collected. Implies -pes and -tsout. -x Temporary extra debugging information Stream type: If input is from a file, then the program will look at the start of the file to determine if the stream is H.264 or H.262 data. This process may occasionally come to the wrong conclusion, in which case the user can override the choice using the following switches. -h264, -avc Force the program to treat the input as MPEG-4/AVC. -h262 Force the program to treat the input as MPEG-2. SEE ALSO
The full documentation for esreverse is maintained as a Texinfo manual. Please check http://tstools.berlios.de for more information. esreverse 1.11 November 2008 ESREVERSE:(1)
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