How does the "tail" command's "-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 …
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 …
What does "tail -f " do? - Unix & Linux Stack Exchange
It means tail -f command will wait for new strings in the file and show these strings dynamically. This command useful for observing log files . For example try, tail -f /var/log/messages.
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 /...
Show tail of files in a directory? - Unix & Linux Stack Exchange
A simple pipe to tail -n 200 should suffice. Example Sample data. $ touch $(seq 300) Now the last 200: $ ls -l | tail -n 200 You might not like the way the results are presented in that list of 200. For that you …
How do I read the last lines of a huge log file?
Feb 20, 2024 · tail --bytes 100M logfile.log | tail However, if you're using GNU Coreutil¹'s tail implementation, that already does this (i.e., it seeks to the end of the file minus 2.5 kB, and looks …
How do I tail a log file and keep tailing it when the latest one ...
tail monitors a single file, or at most a set of files that is determined when it starts up. In the command tail -F file_name*.log, first the shell expands the wildcard pattern, then tail is called on whatever file …
Using tail command to create a file - Unix & Linux Stack Exchange
The problem is that tail program buffers its input file until it get a eof condition, then it prints out the last lines (10 by default). Most likely you are interrupting it with ctrl-c combination that terminates it, thus …
shell - grep and tail -f? - Unix & Linux Stack Exchange
Is it possible to do a tail -f (or similar) on a file, and grep it at the same time? I wouldn't mind other commands just looking for that kind of behavior.
tail -f, but with line numbers - Unix & Linux Stack Exchange
tail -f | nl works for me and is the first what I thought of - that is if you really want the lines numbered from 1 and not with the real line number from the file watched. Optionally add grep if needed to the …