dd if=/dev/sdx of=/path/to/image bs=1M

dd if=/dev/rdiskx of=/path/to/image bs=1m

dd if=/dev/sdx of=/path/to/image

dd if=/dev/sdx | gzip > /path/to/image.gz

dd if=/path/to/image of=/dev/sdx

gzip -dc /path/to/image.gz | dd of=/dev/sdx

cd ~/projects
tar czvf your-raspberry-project-top-level-dir-v1.0.tgz
         ./your-raspberry-project-top-level-dir
scp your-raspberry-project-top-level-dir-v1.0.tgz
         user@backup-host:/home/user/backups/

cd ~/projects/your-raspberry-project-top-level-dir
make clean                          # Or clean it manually using rm (rm ./*.o ./*.pyc)
git init                            # Create new repo here
git add .                           # Add source files to the staging index
git status                          # Verify if it's ok
git commit -a -m "Initial import"   # Fix application's source changes
git add remote https://github.com/user/your-raspberry-project.git
git push -u origin master           # Sends the sources to your github repo
git pull && git push && git status  # Now origin/master is your tracking branch

ssh root@raspberrypi gzip -c /dev/mmcblk0 > img.gz

ssh root@raspberrypi dd if=/dev/mmcblk0 | gzip -c > img.gz

$ diskutil list
/dev/disk0
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *500.1 GB   disk0
   1:                        EFI                         209.7 MB   disk0s1
   2:                  Apple_HFS Macintosh HD            499.2 GB   disk0s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3
/dev/disk1
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:     FDisk_partition_scheme                        *7.9 GB     disk1
   1:             Windows_FAT_32                         58.7 MB    disk1s1
   2:                      Linux                         7.9 GB     disk1s2

sudo dd if=/dev/rdisk1 of=/path/to/backup.img bs=1m

sudo dd if=/path/to/backup.img of=/dev/rdisk1 bs=1m

sudo dd if=/dev/rdisk1 bs=1m | gzip > /path/to/backup.gz

gzip -dc /path/to/backup.gz | sudo dd of=/dev/rdisk1 bs=1m

dd if=/dev/sdd of=yourbackupfilenamehere.dd
tar zcvf yourbackupfilenamehere.dd.tar.gz