# git merge-index > Run a merge program on files that need merging. > More information: . - Merge all files needing resolution using the standard helper: `git merge-index git-merge-one-file -a` - Merge a specific file: `git merge-index git-merge-one-file -- {{path/to/file}}` - Merge multiple files, continuing on failures: `git merge-index -o git-merge-one-file -- {{path/to/file1 path/to/file2 ...}}` - Quietly merge all files with a custom program: `git merge-index -q {{merge-program}} -a` - Inspect merge inputs for a file using `cat`: `git merge-index cat -- {{path}}`