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add stop on file example to fix halt docs

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Axel Kohlmeyer
2021-04-02 12:31:46 -04:00
parent 887eb40ad4
commit d24f74b582
1 changed files with 12 additions and 0 deletions
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doc/src/fix_halt.rst
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@ -115,6 +115,18 @@ The version with "bondmax" will just run somewhat faster, due to less
overhead in computing bond lengths and not storing them in a separate overhead in computing bond lengths and not storing them in a separate
compute. compute.
A variable can be used to implement a large variety of conditions,
including to stop when a specific file exists. Example:
.. code-block:: LAMMPS
variable exit equal is_file(EXIT)
fix 10 all halt 100 v_exit != 0 error soft
Will stop the current run command when a file ``EXIT`` is created
in the current working directory. The condition can be cleared
by removing the file through the :doc:`shell <shell>` command.
The choice of operators listed above are the usual comparison The choice of operators listed above are the usual comparison
operators. The XOR operation (exclusive or) is also included as "\|\^". operators. The XOR operation (exclusive or) is also included as "\|\^".
In this context, XOR means that if either the attribute or avalue is In this context, XOR means that if either the attribute or avalue is