Signed-off-by: Holger Schurig <holgerschurig@xxxxxxxxx> --- Documentation/user/hush.rst | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/Documentation/user/hush.rst b/Documentation/user/hush.rst index 2a0e630..ba4f062 100644 --- a/Documentation/user/hush.rst +++ b/Documentation/user/hush.rst @@ -50,3 +50,11 @@ example the :ref:`command_echo` command has the ``-a FILE`` option for appending a file and the ``-o FILE`` option for overwriting a file. The readline command requires a variable name as argument in which the line will be stored. + +**NOTE:** hust feels like a normal Unix shell, but it cannot calculate by +itself, i.e. $(($A/2)) won't work. Calculation can however be done +with :ref:`command_let`:: + + A=10 + let B=$A/2 + echo $B -- 1.7.10.4 _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
