# pipevcr
Record and play back pipes. Similar to what `script` does with the terminal but for pipes.
This can be used for debugging or testing where timing matters.
## Installation
```
pip3 install --user pipevcr
# or if you have pipx
pipx install pipevcr
```
## Usage
```
usage: pipevcr [-h] [-r] [-s SPEED] [-m MAX_PAUSE] FILE
pipevcr - the linux pipe recorder
positional arguments:
FILE data file
options:
-h, --help show this help message and exit
-r, --record record pipe
-s SPEED, --speed SPEED
playback speed, <1 to slow down, >1 to speed up
-m MAX_PAUSE, --max-pause MAX_PAUSE
max pause time between outputs in seconds
```
## Record
You record a pipe with `-r`, e.g.:
```
(echo wait 1; sleep 1; echo wait 2; sleep 2; echo end) | pipevcr -r test.vcr
```
## Playback
And play it back with:
```
pipevcr test.vcr
```
## Faster
To speed it up (2=double):
```
pipevcr -s 2 test.vcr
```
## Slower
To slow it down (.5=half):
```
pipevcr -s .5 test.vcr
```
You can also set the maximum pause time separately:
```
pipevcr -m 1 test.vcr
```
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