Site Map - skip to main content - dyslexic font - mobile - text - print

Hacker Public Radio

Your ideas, projects, opinions - podcasted.

New episodes Monday through Friday.


hpr1042 :: LiTS 012: tail

Output the last part of files with the tail command

<< First, < Previous, Latest >>

Hosted by Dann on 2012-07-31 is flagged as Explicit and is released under a CC-BY-SA license.
Listen in ogg, spx, or mp3 format. | Comments (0)

Part of the series: Linux in the Shell

Linux In The Shell aims to explore the use of many commands a user can run in the Bash Shell. Tutorials include a write up with examples, an audio component about the write up, and a video component to demonstrate the usage of the command.
The website is http://www.linuxintheshell.com/

The tail command is used to print out the last 10 lines of a file to standard out. This command is a staple in a system administrator’s tool kit and especially handy when monitoring log files. The basic syntax is:

tail some_file

Which will output the last 10 lines of the file. You can alter the number of lines with the -n, or –lines=, flag:

tail -n20 some_file
tail –lines=20 some_file

In some versions of tail you can get away with specifying the number of lines from the end with just a “-” and number:

tail -30 some_file

Instead of working backwards with the -n command you can specify a “+” and some number to start from that number and list the contents to the end:

tail -n+30 some_file

This will display the contents of some_file from line 30 to the end of the file.

For the complete write up including video please go to http://www.linuxintheshell.com/2012/07/31/episode-012-tail/


Comments

Subscribe to the comments RSS feed.

Leave Comment

Powered by Comment Script