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 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.
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 to monitor only the last n lines of a log file?
Here is what I know I can do: tail -n 15 -F mylogfile.txt As the log file is filled, tail appends the last lines to the display. I am looking for a solution that only displays the last 15 lines and get rid of the lines …
`tail -f` until text is seen - Unix & Linux Stack Exchange
tail -f my-file.log | grep -qx "Finished: SUCCESS" -q, meaning quiet, quits as soon as it finds a match -x makes grep match the whole line For the second part, try tail -f my-file.log | grep -m 1 "^Finished: " | …
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 …
tail - Continuously print last line of file to single line on terminal ...
Jul 15, 2018 · How can I continuously print the last line of a file to a single line in the terminal? The following works, but has a high performance hit. while true; do tail -1 /tmp/somelog | tr "\012" "\015";...
logs - How to tail -f multiple files and grep each file individually in ...
Dec 17, 2023 · How to tail -f multiple files and grep each file individually in single output? Ask Question Asked 1 year, 11 months ago Modified 1 year, 11 months ago
How to have tail -f show colored output - Unix & Linux Stack Exchange
Jan 30, 2014 · 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 …