I'm comparing two USB devices post-
md5sum /usb1/* /usb2/* | sort such that all the files, which are at the root of the drives, have their md5 sums calculated, then the output is sorted by md5sum. The entire command expands to
md5sum /usb1/bigfile1 /usb1/bigfile2 /usb2/bigfile1 /usb2/bigfile2, for example. My impatience has me wondering what the progress is, i.e. which file is it working on right now? Because it's piped into another command, I have no stdout or stderr to see which file it's hashing atm. Is there some sort of command to report on what another command is doing right now?
I have this tagged with "signals", but I don't know much about signals to be comfortable interrupting the md5sum process with one. I recall it was possible to send a signal to
dd to make it report progress.