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- How does the tail commands -f parameter work?
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
- What is the difference between tail -f and tail -F?
Tail will then listen for changes to that file If you remove the file, and create a new one with the same name the filename will be the same but it's a different inode (and probably stored on a different place on your disk) tail -f fill not retry and load the new inode, tail -F will detect this
- How to view the output of a running process in another bash session . . .
Also, I would at least consider using tail -f instead of cat so that the output can be followed in near-realtime You may want to look at the OPs comment to this answer which is basically the same as yours
- How to have tail -f show colored output - Unix Linux Stack Exchange
I'd like to be able to tail the output of a server log file that has messages like: INFO SEVERE etc, and if it's SEVERE, show the line in red; if it's INFO, in green What kind of alias can I set
- tail - cat line X to line Y on a huge file - Unix Linux Stack Exchange
Say I have a huge text file (>2GB) and I just want to cat the lines X to Y (e g 57890000 to 57890010) From what I understand I can do this by piping head into tail or viceversa, i e head -A
- How to quit `tail -f` mode without using `Ctrl+c`?
When I do tail -f filename, how to quit the mode without use Ctrl+c to kill the process? What I want is a normal way to quit, like q in top I am just curious about the question, because I feel
- How to obtain inverse behavior for `tail` and `head`?
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 less command-line equivalent of tail -f - Unix Linux Stack . . .
I would like to open up a file using less, and have it automatically scroll the file similar to tail -f I know that I can do less file, and then hit Shift-F to forward forever; like tail -f I n
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