Update drm rst in docs
Add note on drm rst page to remind users NOT to use shell regex with
the match and exclude options.
@@ -15,6 +15,17 @@ contents.
drm is a tool for removing files recursively in parallel.
drm behaves like `rm -rf`, but it is faster.
+.. note::
+
+ DO NOT USE SHELL REGEX!!!
+ The --match and --exclude options use POSIX regex syntax. Because of
+ this make sure that the shell does not try to interpret your regex before
+ it gets passed to the program. You can generally use quotes around your
+ regex to prevent the shell from expanding. An example of this using the
+ --match option with --dryrun would be:
+
+ mpirun -np 128 drm --dryrun -v --name --match 'file_.*' /path/to/dir/*
+
OPTIONS
-------
