Git command to display HEAD commit id?

Question

What command can I use to print out the commit id of HEAD?

This is what I\'m doing by hand:

$ cat .git/HEAD
ref: refs/heads/v3.3
$ cat .git/refs/head         


        

Answer 1

Play with Bash:

git show HEAD | sed -n 1p | cut -d " " -f 2

Answer 2

git log -1

for only commit id

git log | head -n 1 

Answer 3

Use the command:

git rev-parse HEAD

For the short version:

git rev-parse --short HEAD