tail -f fill not retry and load the new inode, tail -F will detect this. The same effect will happen if you rename/move a file. If you for example follows /var/log/messages and logrotate rotates the log …

You can think of -f as "follow". When -f is added to tail, the command will not exit but waits to see if more is added to the file; that additional text will be printed by tail. You normally kill a tail -f …

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 …

You can pipe the tail -f into sed, telling it to quit when it sees the line you're searching for: tail -f /path/to/file.log | sed '/^Finished: SUCCESS$/ q' sed will output each line it processes by …

2014年1月30日 · Try out multitail¹.This is an übergeneralization of tail -f.You can watch multiple files in separate windows, highlight lines based on their content, and more.

In addition, tail will not read any more than head, so thus we have shown that head | tail reads the fewest number of lines possible (again, plus some negligible buffering that we are ignoring). …

@OlivierDulac, tail -n +1 (read anything from the start position) addresses the race condition concerns. It will read the lines that were not in the file at the time wc -l terminated, from the …

Use --follow=name in that case. That causes tail to track the named file in a way that accommodates renaming, removal and creation. So, the tail portion of my command equates …

while (true) do date ls -lrt | tail -n 10 sleep 2 clear done Another way could be using diff. This one will also point out if files are removed that used to be present. An advantage is it doesn't clear …

tail -f logfile.log | cut -b 1-80 tail -f logfile.log | cut -b -$(tput cols) One caveat: at least on the built in terminal on my Mac cut does not seem to handle tab characters very well. It seems it …