I have a shell script that you might enjoy. I am just putting my Node / Repeater in service. This was originally written for ham nodes. If you operate or debug using a console session (SHH, PUTTY, etc.) and you want to send the repeater a DTMF command you can pick up a radio or type a somewhat long command. Script "rpt" from the console makes it easy.
Simulates sending DTMF command *3111 > rpt *3111
Simulates sending DTMF command *3222 generating the "*" for you > rpt 3222
Not a big deal but I use it all the time.
rpt.txt