On queue-based clusters the Queue of pending jobs is shown from a command, say
The command returns, in columns, a list of reasonable data like names, etc, but the columns/data don't really matter for the question.
I like using the utility
watch showqueue at times (with an alias of
alias watch="watch " to force alias expansion of my command to watch). There is valuable data (Running jobs), in the first few lines, then pending jobs, etc, and some valuable summaries at the end.
However, at times the output of showqueue goes off the screen (Unbelievable, I know)! Ideally, I'd like some way to be able to see the beginning and end of the file at the same time.
The best I have so far is:
showqueue > file; head -n 20 file > file2; echo "..." >> file2 ; tail -n 20 file >> file2; cat file2, and using
watch on an alias of that.
Does anyone know of anything a little more flexible or single-utility? My solution gets a little nastier with bash loops to make the "..." break multilined, it's not adaptive to resizing the terminal window at all, and I'm sure there's more that I missed.