Create index.md (#22988)
This commit is contained in:
committed by
Christopher McCormack
parent
8918f66f7e
commit
4f98f4f770
@ -1,37 +1,46 @@
|
||||
---
|
||||
title: Bash tail
|
||||
title: 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.
|
||||
|
||||
## 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.
|
||||
|
||||
### Usage
|
||||
|
||||
```bash
|
||||
tail [options] [file_names]
|
||||
```
|
||||
|
||||
Commonly used options:
|
||||
|
||||
Most used options:
|
||||
|
||||
* `-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.
|
||||
* `-n NUM`, display the last `NUM` lines, instead of the last 10
|
||||
|
||||
|
||||
### Example
|
||||
|
||||
To show the last 10 lines from file **log.txt**
|
||||
|
||||
```bash
|
||||
tail log.txt
|
||||
```
|
||||
Show only the last line from file **log.txt**
|
||||
- `-f` - Display the last lines and then monitor the file. If new lines are added to the file, tail updates the display.
|
||||
- `-F` - Same as `-f` but if the file/log is rolled it will continue with the new file/log.
|
||||
- `-c NUM` - display the last `NUM` bytes of the file.
|
||||
- `-n NUM` - display the last `NUM` lines, instead of the last 10
|
||||
|
||||
### Examples
|
||||
|
||||
#### View the last several lines from file **log.txt**
|
||||
```bash
|
||||
tail 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
|
||||
tail -n1 log.txt
|
||||
```
|
||||
Show live changes from file **log.txt**
|
||||
|
||||
#### Show live changes from file **log.txt**
|
||||
```bash
|
||||
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))
|
||||
|
Reference in New Issue
Block a user