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 …

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 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 …

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 …

Dec 17, 2023 · How to tail -f multiple files and grep each file individually in single output? Ask Question Asked 2 years ago Modified 1 year, 11 months ago

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 -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: " | …

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 …

Jan 25, 2023 · Note that grep -r x ttest* doesn't recursively search for files whose name starts with ttest. The ttest* is first expanded by the shell to the list of file in the current directory whose name starts …

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 …