Index data from shell script with headers

[DataOrg]

I want to index a shell script output thro inputs.conf.

I have configured the script

[script://$SPLUNK_HOME/etc/apps/search/bin/swapmem.sh]
disabled = false 
host = *
index = index_perform
interval = 30 
source = Perform
sourcetype = Memory

the output script is 

 	     total        used        free      shared  buff/cache   available
Swap:         32767         919       31848

 i want to index the first line as header as auto and map the fields vice versa but the output indexes the both lines .