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I tried to print the value returned from testfunction. But it is not displaying anything . I used ./filename.sh to execute the script. Please help
#!/bin/ksh
testfunction()
{
k=5
return $k
}
val=$(testfunction)
echo $val
896
The construct var=$(myfunction) captures the standard out from myfunction and saves it in var . Thus, when you want to return something from myfunction , just send it to standard, like we did with echo in the example above.
To create a variable, you just provide a name and value for it. Your variable names should be descriptive and remind you of the value they hold. A variable name cannot start with a number, nor can it contain spaces. It can, however, start with an underscore.
The value returned by the function is stored in $?, and is not captured by $().
In other words:
testFunction()
{
k=5
echo 3
return $k
}
val=$(testFunction)
echo $? # prints 5
echo $val # prints 3
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