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docs: Add a note explaining test

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Fabian Homborg 2021-07-26 21:31:57 +02:00
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@ -360,6 +360,12 @@ The other conditionals use the :ref:`exit status <variables-status>` of a comman
Unlike programming languages you might know, :ref:`if <cmd-if>` doesn't take a *condition*, it takes a *command*. If that command returned a successful :ref:`exit status <variables-status>` (that's 0), the ``if`` branch is taken, otherwise the :ref:`else <cmd-else>` branch. Unlike programming languages you might know, :ref:`if <cmd-if>` doesn't take a *condition*, it takes a *command*. If that command returned a successful :ref:`exit status <variables-status>` (that's 0), the ``if`` branch is taken, otherwise the :ref:`else <cmd-else>` branch.
To check a condition, there is the :ref:`test <cmd-test>` command::
if test 5 -gt 2
echo Yes, five is greater than two
end
Some examples:: Some examples::
# Just see if the file contains the string "fish" anywhere. # Just see if the file contains the string "fish" anywhere.