Linux Commands Examples

A great documentation place for Linux commands


follow the growth of a log file

see also : tail - less


tailf [OPTION] file

add an example, a script, a trick and tips

: email address (won't be displayed)
: name

Step 2

Thanks for this example ! - It will be moderated and published shortly.

Feel free to post other examples
Oops ! There is a tiny cockup. A damn 404 cockup. Please contact the loosy team who maintains and develops this wonderful site by clicking in the mighty feedback button on the side of the page. Say what happened. Thanks!


alias apache='sudo /usr/local/apache2/bin/apachectl'
alias tail_query='tailf /var/lib/mysql/query.log'
alias tail_query='tailf /var/lib/mysql/query.log'
alias tail_access_moba='tailf /home/moba/data/log/access_log'
alias tail_error_moba='tailf /home/moba/data/log/error_log'


tailf will print out the last 10 lines of a file and then wait for the file to grow. It is similar to tail -f but does not access the file when it is not growing. This has the side effect of not updating the access time for the file, so a filesystem flush does not occur periodically when no log activity is happening.

tailf is extremely useful for monitoring log files on a laptop when logging is infrequent and the user desires that the hard disk spin down to conserve battery life.

Mandatory arguments to long options are mandatory for short options too.
, --lines=N, -N

output the last N lines, instead of the last 10.

-V, --version

Output version information and exit.

-h, --help

Display help and exit.


The tailf command is part of the util-linux package and is available from

see also

tail , less


This program was originally written by Rik Faith (faith[:at:]acm[:dot:]org) and may be freely distributed under the terms of the X11/MIT License. There is ABSOLUTELY NO WARRANTY for this program.

The latest inotify based implementation was written by Karel Zak (kzak[:at:]redhat[:dot:]com).

How can this site be more helpful to YOU ?

give  feedback