tclsh - nurmi-labs/blogger GitHub Wiki

Use Tcl's scan built-in on characters.

bash-5.1$ tclsh <<< 'puts [scan A %c]' # ASCII
65
bash-5.1$ tclsh <<< 'puts [scan Ä %c]' # extended ASCII
196
bash-5.1$ 

The puts call writes a decimal string to the console.