Can TCL call a command from command line?

Yes, you use the exec command.  It’s best to enclose it inside a catch command in case it errors out.  Here’s an example from some tcl code that I have to create a 10 second delay within a loop:

catch {exec ping 127.0.0.1 -n 10 -w 1000 > nul} err

Hope that helps.

Soemtimes you will run into the case where exec will be stubborn about running a particular command line for you.

If that happens you might also try using the system command in TCL.

Here is a snippet that shows a working example of the TCL system command from wihtin one of our TCL procs that calls a command line utility (sendmail) to send an email typically to a pager in our case:

    system “touch ../../../Alerts/$HciConnName.off”

Here is a snippet we use that stops a given thread