Recursively Visit Directories from a Root Directory and Compress All Git Repos

compressAll.sh

#!/bin/bash    

compressAll() {

	declare -a repos
	repos=()

    for i in "$1"/*;do # for all in the root 
        if [ -f "$i" ]; then # if a file exists
            echo "$i" > /dev/null # send it to null
        elif [ -d "$i" ];then # if a directroy exists
			isGit="$(ls -la "$i" | awk '{print $9}' | grep -E "[\.]{1}git[\/]?$" | wc -l)" # is it a repo? Looks for .git directory
            if [ $isGit -gt 0 ]; then				
				echo "$(basename -- "$i")" $isGit
			    repos+=($i)
            else
				echo "Not a repo: $(basename -- "$i")" $isGit                
                compressAll "$i" # recurse
		    fi
        fi
    done 
	
	for rep in ${repos[@]};do
		cd $rep
		echo "Compressing" $rep
		git gc --aggressive
	done
}
compressAll $1 # e.g.: ./compressAll.sh .