How to count number of commits per file pathname by author in a Git repository?

Question

While git-blame and counting number of lines changed by an author within a git repository are helpful, is there a command that can list all of the pathnames modified in a repo a

Answer 1

Example with PowerShell

Display the commit count of the specified author for each file in the current working tree.

Short Form

$author = 'shaun';
dir -r | % { New-Object PSObject -Property `
@{ `
   Count = git rev-list HEAD --count --author=$author -- $_.Name; `
   FileName = $_.Name; `
}} `
| sort Count | % { $_.Count + ' -- ' + $_.FileName + ' -- ' + $author; }

Long Form

$author = 'shaun'; `
Get-ChildItem -recurse | ForEach-Object `
{ `
   New-Object PSObject -Property `
   @{ `
       Count = git rev-list HEAD --count --author=$author -- $_.Name; `
       FileName = $_.Name; `
    } `
} | ` 
Sort-Object Count | ForEach-Object ` 
{ ` 
   $_.Count + ' -- ' + $_.FileName + ' -- ' + $author; `
} 

Notes

• ` means continue the command on a new line.
• | means pipe the resultant objects to the next command.
• $_.SomeProperty accesses a property from the piped in object.
• you can copy/paste this directory into PowerShell, because the ` marks indicate a new line.
• include filter-branch to also track previously deletes files and other branches.
• include git log --format='%aN' | sort -u to iterate through all project authors

Output

0 -- blame.txt~ -- shaun
0 -- .blame.txt.un~ -- shaun
1 -- GitBook-GitTools-06-RewritingHistory.asc -- shaun
1 -- GitBook-GitTools-05-Searching.asc -- shaun
1 -- GitBook-GitTools-03-StashingAndCleaning.asc -- shaun
1 -- GitBook-GitTools-07-ResetDemystified.asc -- shaun
1 -- README.md -- shaun
1 -- LICENSE -- shaun
1 -- GitBook-GitTools-09-Rerere.asc -- shaun
1 -- GitBook-GitBranching-Rebasing.asc -- shaun
1 -- blame2.txt -- shaun
1 -- GitBook-GettingStarted-FirstTimeSetup.asc -- shaun
1 -- GitBook-GitTools-02-InteractiveStaging.asc -- shaun
1 -- GitBook-GitTools-01-RevisionSelection.asc -- shaun
1 -- GitBook-GitInternals-Maintenance.asc -- shaun
2 -- goals.asc -- shaun
2 -- GitBook-GitTools-10-Debugging.asc -- shaun
3 -- blame.txt -- shaun
6 -- GitBook-GitTools-08-AdvancedMerging.asc -- shaun