I have a script that writes new lines to a local file called "log" line by line, I want to know when it stops writing to file.
I want to write another script to check if no new line is added to file "log" for 5 seconds, then I print on screen "finished".
How can I do this in a loop?
You can use
bash word count tool,
wc with flag for reading lines twice to achieve this:-
#!/bin/bash initial=$(wc -l < log) # first capture of the number of lines sleep 5s # Sleep for 5s later=$(wc -l < log) # Second capture of the line count ((later - initial)) && echo "Writing to log pending" || echo "Writing to log finished"