/usr/bin/Fpurge is in ferret-vis 6.6.2-3.
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 | #! /bin/csh -f
# Fpurge
# remove all but the current version of the indicated file(s)
# example usage: Fpurge metafile.plt
# no argument given: explain the ropes
if ($#argv != "1") then
echo '*** Syntax error - name 1 filename as template, only ***'
echo ' Usage: Fpurge filename.extension'
echo 'Example: Fpurge ferret.jnl'
exit
endif
rm {$argv[1]}.~*~
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