Need help on SAP PI 7.4

Hi Experts,

I am looking for the Trigger file concept in SAP PI 7.4 Single Stack system . I am aware that using File adapter  by choosing Transport Protocol as "NFS " and selecting Additional files ----> File List : option we can achieve .

in our current system there is no NFS Mode . So i am looking for other alternative which i can achieve in SAP PI 7.4 Single Stack .

Requirement :  Trying to invoke PI to send the abc.xml file from the shared folder (Which is the target system for PI )  once it receives abc.trg  .

Please do help me out in this .

Thank you

Regards,

Khan .