CLI progress bar or textual progress output

[hyanwong]

When running SLiM for a large simulation on a cluster (i.e. using the command-line), it would be pretty useful to get some idea of the amount of time the simulation is expected to take. While this is (obviously) never going to be precise, presumably a good approximation would be to output the number of elapsed generations somehow, possibly using a progress bar? If the maximum number of generations is known in advance, such a bar (or simple text output, e.g. "generation 100 of 10000: 1%") could be used as an estimate of the proportion of time taken.

[bhaller]

Hi @hyanwong. People often do this in their script, with something like:

first() {
catn("Tick " + community.tick + "...");
}

But I agree that providing this as a built-in feature, activated with a command-line flag like "-progress" or some such, would be nice.