diff options
| author | Jan Sucan <jan@jansucan.com> | 2022-06-18 08:50:45 +0200 |
|---|---|---|
| committer | Jan Sucan <jan@jansucan.com> | 2022-06-18 08:50:54 +0200 |
| commit | 948a65cf39c8ce31c5adc0f24979e0cb55bc33c3 (patch) | |
| tree | ae923f4594fef0abb777f63291d62530c345b229 /README.md | |
| parent | e1d10bea5d9fc94ba800ade1de430c7f3c0ccacd (diff) | |
Refactor the command line interface
Select operation by its name instead of by number of the arguments.
Diffstat (limited to 'README.md')
| -rw-r--r-- | README.md | 19 |
1 files changed, 8 insertions, 11 deletions
@@ -9,21 +9,18 @@ e.g. the differential image file is read twice when restoring it. ## Synopsis -> diff-dd [-s SECTOR_SIZE] [-b BUFFER_SIZE] [INFILE] REFFILE OUTFILE +> diff-dd help -## Usage +> diff-dd backup [-s SECTOR_SIZE] [-b BUFFER_SIZE] INFILE REFFILE OUTFILE -The utility is used for creating and restoring differential images -created by it. Meaning of the ```INFILE``` and ```REFFILE``` depends -on whether backup mode or restore mode is requested. Providing ```INFILE``` -selects the backup mode. Omitting it selects the restore mode. +> diff-dd restore [-s SECTOR_SIZE] [-b BUFFER_SIZE] INFILE OUTFILE ## Backup Using ```diff-dd ``` for backup requires the full backup image to exist. Differential backup is created with: -> diff-dd INFILE REFFILE OUTFILE +> diff-dd backup INFILE REFFILE OUTFILE The ```INFILE``` is a path to the file to backup differentially, the ```REFFILE``` is the full image, and the ```OUTFILE``` is the file to @@ -33,9 +30,9 @@ which only the changed sectors of the ```INFILE```, compared to the ## Restore The restoration means application of the changed sectors saved in the -```REFFILE```, which is the differential image, to the ```OUTFILE```: +```INFILE```, which is the differential image, to the ```OUTFILE```: -> diff-dd REFFILE OUTFILE +> diff-dd restore INFILE OUTFILE ## Options @@ -55,13 +52,13 @@ First, the full image of the partition to backup has to be created: When the user decides to create the differential image, he or she runs: -> diff-dd /dev/sda1 full.img diff.img +> diff-dd backup /dev/sda1 full.img diff.img If a data accident happens, the partition can be restored by running: > dd bs=4M if=full.img of=/dev/sda1 -> diff-dd diff.img /dev/sda1 +> diff-dd restore diff.img /dev/sda1 The first command restores the old full image. The second one applies the differences. |