bitsgalore

#! /usr/bin/env python3

"""
Geolocate web domains. Input file is a text file where each line contains
1 web domain.

Author: Johan van der Knijff
Requirements:

1. Unix/Linux environment with 'host' tool installed,

bitsgalore

Shared-mime-info

Downloaded latest sources from:

http://freedesktop.org/~hadess/shared-mime-info-1.6.tar.xz

Then look at JPEG 2000 magic pattrns in file freedesktop.org.xml (I edited out the comments):

  <mime-type type="image/jp2">

bitsgalore

<?xml version='1.0' encoding='UTF-8'?>
<jpylyzer xmlns="http://openpreservation.org/ns/jpylyzer/v2/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://openpreservation.org/ns/jpylyzer/v2/ http://jpylyzer.openpreservation.org/jpylyzer-v-2-0.xsd">
<toolInfo>
    <toolName>jpylyzer</toolName>
    <toolVersion>2.0.0</toolVersion>
</toolInfo>
<file xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:ns0="adobe:ns:meta/" xmlns:ns2="http://ns.adobe.com/xap/1.0/" xmlns:ns4="http://ns.adobe.com/photoshop/1.0/" xmlns:ns5="http://ns.adobe.com/xap/1.0/mm/" xmlns:ns6="http://ns.adobe.com/xap/1.0/sType/ResourceEvent#" xmlns:ns7="http://ns.adobe.com/tiff/1.0/" xmlns:ns8="http://ns.adobe.com/exif/1.0/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
    <fileInfo>
        <fileName>jpeg2000_2x.jp2</fileName>
        <filePath>/home/johan/Downloads/jpeg2000_2x.jp2</filePath>

bitsgalore

#!/bin/bash

# Check value of last-modified date header for list of URLs
#
#  Uses curl:  https://curl.haxx.se/

# Display usage message if command line does not contain expected
# number of arguments
if [ "$#" -ne 2 ] ; then
    echo "Usage: checkLastModified.sh fileIn fileOut" >&2

bitsgalore

<?xml version='1.0' encoding='UTF-8'?>
<jpylyzer xmlns="http://openpreservation.org/ns/jpylyzer/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://openpreservation.org/ns/jpylyzer/ http://jpylyzer.openpreservation.org/jpylyzer-v-1-1.xsd">
    <toolInfo>
        <toolName>jpylyzer</toolName>
        <toolVersion>1.18.0</toolVersion>
    </toolInfo>
    <fileInfo>
        <fileName>openJPEG15.jp2</fileName>
        <filePath>/home/johan/jpylyzer-test-files/openJPEG15.jp2</filePath>
        <fileSizeInBytes>670372</fileSizeInBytes>

bitsgalore

Proposed jpylyzer output format changes

Johan van der Knijff, 3 July 2019

This document describes some proposed changes to the jpylyzer output format for the upcoming jpylyzer 2.0 release (which is foreseen for November 2019). The main occasion for these changes is the addition of raw codestream validation functionality. Since this functionality will lead to a small (but nevertheless breaking) change to jpylyzer's output format, this is a good moment for fixing a few other inconsistencies.

Related Github issues are:

• Add option to validate raw codestreams (through API, possibly also CLI) #113
• Suggested output improvements (jpylyzer 2.x) #55

bitsgalore

Reading a tape with dd and mt

In the simplest case, reading data from a tape involves nothing more than a dd command line such as this one:

dd if=/dev/nst0 of=file0001.dd bs=16384

Here, the "if" argument tells dd to read input from the non-rewind block device /dev/nst0, and the value of "of" defines the file where

bitsgalore

<?xml version='1.0' encoding='UTF-8'?>
<jpylyzer xmlns="http://openpreservation.org/ns/jpylyzer/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://openpreservation.org/ns/jpylyzer/ http://jpylyzer.openpreservation.org/jpylyzer-v-2-0.xsd">
<toolInfo>
    <toolName>jpylyzer</toolName>
    <toolVersion>2.0.0a1</toolVersion>
</toolInfo>
<file>
    <fileInfo>
        <fileName>aware.jp2</fileName>
        <filePath>/home/johan/test/aware.jp2</filePath>

bitsgalore

<?xml version='1.0' encoding='UTF-8'?>
<jpylyzer xmlns="http://openpreservation.org/ns/jpylyzer/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://openpreservation.org/ns/jpylyzer/ http://jpylyzer.openpreservation.org/jpylyzer-v-2-0.xsd">
<toolInfo>
    <toolName>jpylyzer</toolName>
    <toolVersion>2.0.0a1</toolVersion>
</toolInfo>
<file>
    <fileInfo>
        <fileName>aware.jp2</fileName>
        <filePath>/home/johan/test/aware.jp2</filePath>

bitsgalore

<?xml version='1.0' encoding='UTF-8'?>
<jpylyzer xmlns="http://openpreservation.org/ns/jpylyzer/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://openpreservation.org/ns/jpylyzer/ http://jpylyzer.openpreservation.org/jpylyzer-v-2-0.xsd">
<toolInfo>
    <toolName>jpylyzer</toolName>
    <toolVersion>2.0.0a1</toolVersion>
</toolInfo>
<file>
    <fileInfo>
        <fileName>is_codestream.j2c</fileName>
        <filePath>/home/johan/test/is_codestream.j2c</filePath>