patrickmmartin/FILTER-INDEX-NOTES.md

## FILTER-INDEX-NOTES.md

      
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              FILTER-INDEX-NOTES.md
            
          
    git filter-branch --index-filter \
        'git ls-files -s | sed "s-\t\"*-&newsubdir/-" |
                GIT_INDEX_FILE=$GIT_INDEX_FILE.new \
                        git update-index --index-info &&
         mv "$GIT_INDEX_FILE.new" "$GIT_INDEX_FILE"' HEAD

git ls-files  -s  - lists staged files
GIT_INDEX_FILE -  WTF is this? GIT_INDEX_FILE.new seems to be an output variable
git update-index -        --index-info    Read index information from stdin. supports git ls-files -s
from  http://jeffreysambells.com/2010/09/13/a-little-bit-of-git-fu
git filter-branch --index-filter 'git ls-files -s | sed "s-\t-&newdir/-" |
    GIT_INDEX_FILE=$GIT_INDEX_FILE.new \
    git update-index --index-info &&
    if test -f "$GIT_INDEX_FILE.new"; then mv $GIT_INDEX_FILE.new $GIT_INDEX_FILE; fi' HEAD