Here’s a bash snippet I can see myself using one day

while :; do ls -lh "$( ls -t1 /tmp/tmp* | head -n 1 )"; sleep 10; done

• "$( ls -t1 /tmp/tmp* | head -n 1 )": Get a file name
  • ls -t1 /tmp/tmp*: List the files in /tmp/tmp* ordered by most recently updated
  • head -n 1: Get the first one
• ls -lh <one-file>: Get the long listing of just one file
• The rest of it is just to do it over and over so that I can see changes in the file size