/usr/sbin/geographiclib-get-magnetic is in geographiclib-tools 1.49-2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 | #! /bin/sh
#
# Download magnetic models for use by GeographicLib::MagneticModel.
#
# Copyright (c) Charles Karney (2011-2015) <charles@karney.com> and
# licensed under the MIT/X11 License. For more information, see
# https://geographiclib.sourceforge.io/
DEFAULTDIR="/usr/share/GeographicLib"
SUBDIR=magnetic
NAME=magnetic
MODEL=magneticmodel
CLASS=MagneticModel
TOOL=MagneticField
EXT=wmm.cof
usage() {
cat <<EOF
usage: $0 [-p parentdir] [-d] [-h] $MODEL...
This program downloads and installs the datasets used by the
GeographicLib::$CLASS class and the $TOOL tool to compute
magnetic fields. $MODEL is one of more of the names from this
table:
size (kB)
name degree years tar.bz2 disk
wmm2010 12 2010-2015 2 3
wmm2015 12 2015-2020 2 3
igrf11 13 1900-2015 7 25
igrf12 13 1900-2020 7 26
emm2010 739 2010-2015 3700 4400
emm2015 729 2000-2020 660 4300
emm2017 790 2000-2022 1740 5050
The size columns give the download and installed sizes of the datasets.
In addition you can specify
all = all of the supported magnetic models
minimal = wmm2015 igrf12
-p parentdir (default $DEFAULTDIR) specifies where the
datasets should be stored. The "Default $NAME path" listed when running
$TOOL -h
should be parentdir/$SUBDIR. This script must be run by a user with
write access to this directory.
Normally only datasets which are not already in parentdir are
downloaded. You can force the download and reinstallation with -f.
If -d is provided, the temporary directory which holds the downloads,
\$TMPDIR/$NAME-XXXXXXXX or ${TMPDIR:-/tmp}/$NAME-XXXXXXXX,
will be saved. -h prints this help.
For more information on the magnetic models, visit
https://geographiclib.sourceforge.io/html/$NAME.html
EOF
}
PARENTDIR="$DEFAULTDIR"
FORCE=
while getopts hp:fd c; do
case $c in
h )
usage;
exit 0
;;
p ) PARENTDIR="$OPTARG"
;;
f ) FORCE=y
;;
d ) DEBUG=y
;;
* )
usage 1>&2;
exit 1
;;
esac
done
shift `expr $OPTIND - 1`
if test $# -eq 0; then
usage 1>&2;
exit 1
fi
test -d "$PARENTDIR"/$SUBDIR || mkdir -p "$PARENTDIR"/$SUBDIR 2> /dev/null
if test ! -d "$PARENTDIR"/$SUBDIR; then
echo Cannot create directory $PARENTDIR/$SUBDIR 1>&2
exit 1
fi
TEMP=
if test -z "$DEBUG"; then
trap 'trap "" 0; test "$TEMP" && rm -rf "$TEMP"; exit 1' 1 2 3 9 15
trap 'test "$TEMP" && rm -rf "$TEMP"' 0
fi
TEMP=`mktemp -d -q -t $NAME-XXXXXXXX`
if test -z "$TEMP" -o ! -d "$TEMP"; then
echo Cannot create temporary directory 1>&2
exit 1
fi
WRITETEST="$PARENTDIR"/$SUBDIR/write-test-`basename $TEMP`
if touch "$WRITETEST" 2> /dev/null; then
rm -f "$WRITETEST"
else
echo Cannot write in directory $PARENTDIR/$SUBDIR 1>&2
exit 1
fi
set -e
cat > $TEMP/all <<EOF
wmm2010
wmm2015
emm2010
emm2015
emm2017
igrf11
igrf12
EOF
while test $# -gt 0; do
if grep "^$1\$" $TEMP/all > /dev/null; then
echo $1
else
case "$1" in
all )
cat $TEMP/all
;;
minimal )
echo wmm2015; echo igrf12
;;
* )
echo Unknown magnetic model $1 1>&2
exit 1
;;
esac
fi
shift
done > $TEMP/list
sort -u $TEMP/list > $TEMP/todo
while read file; do
if test -z "$FORCE" -a -s $PARENTDIR/$SUBDIR/$file.$EXT; then
echo $PARENTDIR/$SUBDIR/$file.$EXT already installed, skipping $file...
echo $file >> $TEMP/skip
continue
fi
echo download $file.tar.bz2 ...
echo $file >> $TEMP/download
URL="https://downloads.sourceforge.net/project/geographiclib/$SUBDIR-distrib/$file.tar.bz2?use_mirror=autoselect"
ARCHIVE=$TEMP/$file.tar.bz2
wget -O$ARCHIVE $URL
echo unpack $file.tar.bz2 ...
tar vxojf $ARCHIVE -C $PARENTDIR
echo $MODEL $file installed.
done < $TEMP/todo
if test "$DEBUG"; then
echo Saving temporary directory $TEMP
fi
echo
if test -s $TEMP/download; then
n=`wc -l < $TEMP/download`
s=; test $n -gt 1 && s=s
cat <<EOF
Installed $NAME dataset$s `tr '\n' ' ' < $TEMP/download`in $PARENTDIR/$SUBDIR.
EOF
fi
if test -s $TEMP/skip; then
n=`wc -l < $TEMP/skip`
s=; test $n -gt 1 && s=s
cat <<EOF
Skipped $NAME dataset$s `tr '\n' ' ' < $TEMP/skip | sed 's/ $//'`.
EOF
fi
echo
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