Following command outputs following lines of text on console
git log --pretty=format:\"%h;%ai;%s\" --shortstat
ed6e0ab;2014-01-07 16:32:39 +0530;Foo
3 files
combining all answers above, here are my 2 cents in case anyone is looking:
echo "commit id,author,date,comment,changed files,lines added,lines deleted" > res.csv
git log --since='last year' --date=local --all --pretty="%x40%h%x2C%an%x2C%ad%x2C%x22%s%x22%x2C" --shortstat | tr "\n" " " | tr "@" "\n" >> res.csv
sed -i 's/ files changed//g' res.csv
sed -i 's/ file changed//g' res.csv
sed -i 's/ insertions(+)//g' res.csv
sed -i 's/ insertion(+)//g' res.csv
sed -i 's/ deletions(-)//g' res.csv
sed -i 's/ deletion(-)//g' res.csv
and either save it into git-logs-into-csv.sh file or just copy/paste into console.
I think it's relatively self-explaining but just in case:
--all takes logs from all branches--since limits the number of commits we want to look at--shortstat - to get some idea what was done in the commit