slack-history

Export Slack Channel Files and update Slack JSON for use with slack2html

Usage

1. Download workspace data

1. Export your workspace data from Slack. This involves using the Slack GUI to (a) initiate the export process, then (b) click a link to download a ZIP file containing your workspace data.
2. Extract the contents of the ZIP file into an empty folder on your computer (e.g. C:\Temp\slack\exported-data).

2. Download the PowerShell script

1. Launch PowerShell.
2. Clone this repository onto your computer.

   PS> git clone https://github.com/jwts-dev/slack-history.git

   Note: In case you don't have Git installed, you can, instead, download the contents of the main branch of the repository as a ZIP file, then extract its contents.

3. Navigate into the root folder of the repository.

   PS> cd .\slack-history\

3. Edit the PowerShell script

1. Open the script file (i.e. Slack_Export_Channel_Files.ps1) in a text editor.
2. Edit the value of the $ExportPath variable (currently defined on line 1) to contain the path to the root folder of the data you exported from Slack earlier.

   - $ExportPath = ".\slackHistory"
   + $ExportPath = "C:\Temp\slack\exported-data"

   Note: If you don't edit the value, the script will look for exported Slack data in the following folder: .\slackHistory

3. Edit the following line of code (currently line 19) as shown below.

   - $channelList = Get-Content -Raw -Path .\slackHistory\channels.json | ConvertFrom-Json
   + $channelList = Get-Content -Raw -Path "$ExportPath\channels.json" | ConvertFrom-Json

   Note: If you don't edit the line, the script will look for the exported Slack channel list in the following folder: .\slackHistory

   Note: This change may eventually be incorporated into the authoritative script, rendering this manual step unnecessary. For now, though, it is necessary.

4. Save the changes to the file.

4. Run the PowerShell script

1. Run the script (in a way that bypasses PowerShell's execution policy).

   PS> PowerShell.exe -ExecutionPolicy Bypass -File .\Slack_Export_Channel_Files.ps1

When the script finishes running, it will print a message that says "Exiting" and the PowerShell prompt will reappear.

References

1. https://docs.microsoft.com/en-us/microsoftteams/migrate-slack-to-teams#channel-files