I have a log of 55GB in size. I tried: cat logfile.log | tail But this approach takes a lot of time. Is there any way to read huge files faster or any other approach?
From the tail(1) man page: With --follow (-f), tail defaults to following the file descriptor, which means that even if a tail’ed file is renamed, tail will continue to track its end. This default behavior is not desirable when you really want to track the actual name of the file, not the file descrip- tor (e.g., log rotation). Use --follow=name in that case. That causes tail to track the ...
My question is How to combine multiple tail -f commands into single output using various filtering with the advance of the tail -f file separator ==> fileX <==? Backup question is there any other way how can I approach similar results of live vie of the log files changes?
logs - How to tail -f multiple files and grep each file individually in ...
With GNU tail, these lines will not show up in the second shell session (where tail -f is still running). Repeat the exercise with tail -F and observe the difference.
You can use this to strip the first two lines: tail -n +3 foo.txt and this to strip the last two lines, if your implementation of head supports it: head -n -2 foo.txt (assuming the file ends with \n for the latter)
The point is that tail -f file1 file2 doesn't work on AIX where tail accepts only one filename. You can do (tail -f file1 & tail -f file2) | process to redirect the stdout of both tail s to the pipe to process.