SSH password-free, git pull and upload code, time synchronization

SSH Password free:
Create key
SSH-KEYGEN-T RSA
Always enter.

Copy public key to specify IP address
Ssh-copy-id-i. ssh/id_rsa.pub [Email protected]
Enter password

Test
SSH [email protected]

Git Pull and upload code:
Download the appropriate application directory and file
git clone [email protected]:root/test.git

Update packets (Pull data)
CD to the appropriate directory
Git pull
git status

Initialize the local git directory, and add the remote repository
Git init
git remote add origin [email protected]:root/test.git
Upload Code
git Add.
git commit-m ' Update '
Git push Origin Master

Time synchronization:
Yum-y Install NTP
Scheduled Tasks
Sync every 10 minutes
Crontab-e
/10 */usr/sbin/ntpdate pool.ntp.org >/dev/null 2>&1

SSH password-free, git pull and upload code, time synchronization