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bashwindows-terminal

How to change the terminal title to currently running process?

I know how to change the Terminal Window title. What I am trying to find out is how to make bash not zsh write out the currently running process so if I say do

$ ls -lF

I would get something like this for the title

/home/me/curerntFolder (ls -lF)

Getting the last executed command would be too late since the command has executed already, so it won't set the title with the command that was executed.

Solution

  • UPDATE: my previous answer (below) displays the previous command in the title bar.

    Ignoring everything from my previous answer and starting from scratch:

    trap 'echo -ne "\033]0;${PWD}: (${BASH_COMMAND})\007"' DEBUG

    Running the following at the command prompt:

    $ sleep 10

    The window title bar changes to /my/current/directory: (sleep 10) while the sleep 10 is running.

    Running either of these:

    $ sleep 1; sleep 2; sleep 3
$ { sleep 1; sleep2; sleep 3; }

    The title bar changes as each sleep command is invoked.

    Running this:

    $ ( sleep 1; sleep 2; sleep 3 )

    The title bar does not change (the trap does not apply within a subprocess call).

    One last one:

    $ echo $(sleep 3; echo abc)

    The title bar displays (echo $sleep 3; echo abc)).

    previous answer

    Adding to this answer:

    store_command() {
  declare -g last_command current_command
  last_command=$current_command
  current_command=$BASH_COMMAND
  return 0
}
trap store_command DEBUG

PROMPT_COMMAND='echo -ne "\033]0;${PWD}: (${last_command})\007"'

    Additional reading materials re: trap / DEBUG: