Only one command line in PROJ.4

Only one command line in PROJ.4

I would like to know if there are a way to write only one command line to
obtain the expected results. I explain:
When you write this :
$ proj +proj=utm +zone=13 +ellps=WGS84 -f %12.6f
If you want to recieved the output data:
500000.000000 4427757.218739
You must to write in another line with the input data:
-105 40
Is it possible to write concatenated command line as this stile?:
$ proj +proj=utm +zone=13 +ellps=WGS84 -f %12.6f | -105 40
Thank you