https://github.com/sl236/teetail

teetail - tee, but only the tail goes in the file
https://github.com/sl236/teetail

Last synced: about 2 months ago
JSON representation

teetail - tee, but only the tail goes in the file

• Host: GitHub
• URL: https://github.com/sl236/teetail
• Owner: sl236
• License: gpl-3.0
• Created: 2022-11-23T17:04:46.000Z (over 1 year ago)
• Default Branch: main
• Last Pushed: 2022-11-24T00:40:53.000Z (over 1 year ago)
• Last Synced: 2024-02-01T11:07:02.317Z (5 months ago)
• Language: C
• Homepage:
• Size: 24.4 KB
• Stars: 8
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Lists

• cli-apps - teetail - Like tee, but only the tail goes in the file. (<a name="utility"></a>Utilities)
• awesome-cli-apps - teetail - Like tee, but only the tail goes in the file. (<a name="utility"></a>Utilities)

README

        
# teetail

[![.github/workflows/main.yml](https://github.com/sl236/teetail/actions/workflows/main.yml/badge.svg)](https://github.com/sl236/teetail/actions/workflows/main.yml)

## what?

`teetail` is like `tee` - it echoes its standard input to standard output and also to a file; but also like `tail` - no more than the number of bytes specified on the command line are placed in the file, and these are the tail of the dataset passing through `teetail`.

## why?

You have a pipeline moving gigabytes of output. You want to copy the data at some point in the pipeline to a file for debugging, like `tee` does. But there's way too much of it to store, so you want to limit the file size and just have the tool put the last part  in there, like `tail` would. You could probably construct some kind of Rube Goldberg thing out of `tee` and `tail` and `mkfifo`. Or you could use `teetail`.

## how?

*some pipeline* `| teetail -o log -c 1048576 |` *more pipeline*

There are some configuration options, `teetail` with no arguments to see them.

## compile

use your favourite C compiler, e.g.

`gcc teetail.c -o teetail`

## install

place the `teetail` binary wherever locally built things go on your system, e.g.

`sudo mv teetail /usr/local/bin`