On Tue, Nov 11, 2014, at 05:45 PM, Marcin Zajączkowski wrote:
> Another question related to fish scripting. How can I set a value to a
> variable to be able to use it in `if`?
>
> if test $myBool
> ...
> end
The shell's only notion of true and false (this is true for all unix
shells that I know) is that an exit status of zero is true and an exit
status of non-zero is false. If you want to set variables to "true" and
"false" then you can use code like this:
if test "$var" = true; echo true; else; echo false; end
If you don't use the double quotes around the variable, you'll get a
confusing error when the variable is not set.
In fish, if expects the condition to be a command, so you cannot use a
variable directly like "if $var".
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