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.
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 …
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 …
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 …
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 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 …
Head/Tail command to grab multiple sets of lines
Oct 17, 2023 · I have to grab the first two lines, the lines 43 and 44, and the last 2 lines from a file in one conduct of commands. Is there away to print those while only using head, tail and pipe commands AND
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 /...
tail command does not display last line - Unix & Linux Stack Exchange
Apr 17, 2020 · I am using the following command to read the last line every time the file changes. tail -f -n1 Entrie.txt It happens that the first line written shows it without problems, but later when I write...
The 'less' command-line equivalent of 'tail -f'
99 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 need less because it …