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
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3 Answers
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 $val # prints 3
Comments
What you are trying to do will capture the last value 'echoed' in your function in val variable
val=$(testFunction)
If you want to capture return value of your function then you should utilize $? [i.e. echo $?] which is last exit status.
Comments
This ksh functions works:
IPADDRESS() # get the IP address of this host
{
# purpose: to get the IP address of this host
# and return it as a character string
#
typeset -l IPADDR
IPADDR=$(ifconfig -a | grep inet | grep -v '127.0.0.1' | awk '{print $2}')
print $IPADDR
}
IP_Address=$(IPADDRESS)
echo $IP_Address
exit
