/usr/share/doc/ruby1.8-examples/examples/trojan.rb is in ruby1.8-examples 1.8.7.352-2ubuntu1.6.
This file is owned by root:root, with mode 0o644.
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 | #!/usr/bin/ruby1.8
path = ENV['PATH'].split(File::PATH_SEPARATOR)
for dir in path
if File.directory?(dir)
for f in d = Dir.open(dir)
fpath = File.join(dir, f)
if File.file?(fpath) && (File.stat(fpath).mode & 022) != 0
printf("file %s is writable from other users\n", fpath)
end
end
d.close
end
end
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