The tail
command is used to display the last n lines of a specified file. By default the tail
command displays the last 10 lines of a file. This can be changed by using the -n
argument and specifying a new value. If the specified file does not contain at least n lines then a the .bak version of the file will be prepended, if it exists.
Another powerful feature of the tail
command is its ability to monitor and display file changes in real-time. The specified file in monitored for changes once a second and only the changed portion of the file is displayed.
Below is an update project you can apply to your JNIOR to get the tail application.
Name | Version | Release Date | Size | MD5 |
---|---|---|---|---|
Tail Command | v1.0 | Feb 20 2023 | 3.5 KB | e0ce27e20c337000d8fd403c76b7ce80 |
tail [OPTION]... [FILE]...
Short Options | Long Option | Option Value | Description |
---|---|---|---|
-n | –lines | NUMBER | The number of lines that should be displayed from the end of the file |
-f | –follow | Monitor the file in real-time |
The default usage will show the last 10 lines of the specified file.
We can use the -n
or --lines
option to specify 20 lines.
Use -f
or --follow
to follow the file in real-time. New entries will be displayed. This command will not return to the prompt until ANY key is pressed.
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