/usr/bin/matho is in mathomatic 15.8.2-2.
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 | #!/bin/sh
# Shell script to run Mathomatic with the GNU m4 preprocessor.
# This allows entry of many standard math functions.
#
# Usage: matho [ input_files ]
if ! m4 --version >/dev/null
then
echo The m4 package is not installed. GNU m4 is required to run m4 Mathomatic.
exit 1
fi
m4 -eP -- /usr/share/mathomatic/m4/functions.m4 "$@" - | mathomatic -ru -s-1
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