git-gc.sh

#!/bin/sh

# (c) by Matthias Lohr <matthias@lohr.me> 2014
# Read LICENSE file for license information.

CURDIR="$(pwd)"

if [ "$1" = "" ] ; then
    REPOSDIR="$CURDIR"
else
    REPOSDIR="$1"
fi

FILES_BEFORE=$(find "$REPOSDIR" -type f | wc -l )
SPACE_BEFORE=$(du -sh "$REPOSDIR")

echo Current: $SPACE_BEFORE in $FILES_BEFORE files
for ITEM in $(find "$REPOSDIR" -type d -name "*.git") ; do
    echo "Cleaning up $ITEM..."
    cd "$ITEM"
    git gc --aggressive
    cd "$CURDIR"
done

FILES_AFTER=$(find "$REPOSDIR" -type f | wc -l )
SPACE_AFTER=$(du -sh "$REPOSDIR")

echo Before: $SPACE_BEFORE in $FILES_BEFORE files
echo Now: $SPACE_AFTER in $FILES_AFTER files