Trying to debug an issue with a server and my only log file is a 20GB log file (with no timestamps even! Why do people use System.out.println() as logging? In production?!)
Using grep, I’ve found an area of the file that I’d like to take a look at, line 347340107.
Other than doing something like
head -<$LINENUM + 10> filename | tail -20
… which would require head to read through the first 347 million lines of the log file, is there a quick and easy command that would dump lines 347340100 – 347340200 (for example) to the console?
update I totally forgot that grep can print the context around a match … this works well. Thanks!
