Create index.md (#22988)

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Chris Jesz
2018-11-29 19:02:57 -05:00
committed by Christopher McCormack
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title: Bash tail title: Bash Tail
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## Bash tail ## Bash Tail
Tail is a program to display the **tail** end of a text file. If no option is given, tail shows the last 10 lines of a given file. `tail` is a program to display the **tail** end of a text file. If no option is given, tail shows the last 10 lines of a given file.
### Usage ### Usage
@ -11,27 +11,36 @@ Tail is a program to display the **tail** end of a text file. If no option is gi
tail [options] [file_names] tail [options] [file_names]
``` ```
Most used options: Commonly used options:
* `-f`, display the last lines and then monitor the file. If new lines are added to the file, tail updates the display. - `-f` - Display the last lines and then monitor the file. If new lines are added to the file, tail updates the display.
* `-c NUM`, display the last `NUM` bytes of the file. - `-F` - Same as `-f` but if the file/log is rolled it will continue with the new file/log.
* `-n NUM`, display the last `NUM` lines, instead of the last 10 - `-c NUM` - display the last `NUM` bytes of the file.
- `-n NUM` - display the last `NUM` lines, instead of the last 10
### Examples
### Example #### View the last several lines from file **log.txt**
To show the last 10 lines from file **log.txt**
```bash ```bash
tail log.txt tail log.txt
``` ```
Show only the last line from file **log.txt**
#### View the last 15 lines from file **log.txt**
```bash
tail -n 15 log.txt
```
#### Show only the last line from file **log.txt**
```bash ```bash
tail -n1 log.txt tail -n1 log.txt
``` ```
Show live changes from file **log.txt**
#### Show live changes from file **log.txt**
```bash ```bash
tail -f log.txt tail -f log.txt
``` ```
#### More Information:
* Wikipedia: https://en.wikipedia.org/wiki/Tail_(Unix) ### More Information
* Run `man tail` for more information on the tail command as well as a complete list of options.
* [Wikipedia](https://en.wikipedia.org/wiki/Tail_(Unix))