Convert your git log entries to PowerShell objects

Veröffentlicht von

Sometimes you’re in the situation where you’ve to revert a specific commit via git revert sha1. Sometimes you only have a ticket number (in the best case …) and need to find out the corresponding GIT SHA1.

Option 1: Type git log and read the commit messages …

Option 2: Convert the git log output to a PowerShell object and „grep“ for a given commit message.

How can option two be realized? Well GIT log supports pretty-formats, which you can use to sculpture your `stdout` output to make it easier to parse. Below you see the one-liner using the advantage of this formating feature:

(git log --format="%ai`t%H`t%an`t%ae`t%s" -n 100) | ConvertFrom-Csv -Delimiter "`t" -Header ("Date","CommitId","Author","Email","Subject")


What’s going on?


git log --format="%ai`t%H`t%an`t%ae`t%s" -n 100

Above GIT command produces the following output:

2019-07-31 11:07:01 +0200       fd006e74a2c21c9a8ae806ceaed1bfbe3816b305        user  Second commit message
2019-07-31 09:09:15 +0200       6469f803601d16bf8b59ff6e333ff64cc9f531e0        user  First commit message

Date, commit ID, user name, user email and commit message are separated by tabs. Separating this way makes it easy to convert the output to CSV, by piping it to theConvertTo-CSV cmdlet. With the help of the -Delimiter and the -Header parameters, it is easy to baptize every entry with a given name.

The last thing to do is to store the pipeline output in an array, like:

$commits = (git log --format="%ai`t%H`t%an`t%ae`t%s" -n 100) | ConvertFrom-Csv -Delimiter "`t" -Header ("Date","CommitId","Author","Email","Subject")

Each entry in `$commits` will have a Date, CommitId, Author, Email and Subject property, which makes it easy to filter for specific commit messages via

$commits| Where-Object { $_.Subject -like "*added*" }

Kommentar hinterlassen

Deine E-Mail-Adresse wird nicht veröffentlicht. Erforderliche Felder sind mit * markiert.