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README: Add --rsync-append-flags (#242)

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README.md
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@ -15,17 +15,22 @@ On macOS, it has a few disadvantages compared to Time Machine - in particular it
Usage: rsync_tmbackup.sh [OPTION]... <[USER@HOST:]SOURCE> <[USER@HOST:]DESTINATION> [exclude-pattern-file]
Options
-p, --port SSH port.
-h, --help Display this help message.
--rsync-get-flags Display the default rsync flags that are used for backup.
--rsync-set-flags Set the rsync flags that are going to be used for backup.
--log-dir Set the log file directory. If this flag is set, generated files will
not be managed by the script - in particular they will not be
automatically deleted.
--strategy Set the expiration strategy. Default: "1:1 30:7 365:30" means after one
day, keep one backup per day. After 30 days, keep one backup every 7 days.
After 365 days keep one backup every 30 days.
--no-auto-expire Set option to disable automatically purging old backups when out of space.
-p, --port SSH port.
-h, --help Display this help message.
-i, --id_rsa Specify the private ssh key to use.
--rsync-get-flags Display the default rsync flags that are used for backup. If using remote
drive over SSH, --compress will be added.
--rsync-set-flags Set the rsync flags that are going to be used for backup.
--rsync-append-flags Append the rsync flags that are going to be used for backup.
--log-dir Set the log file directory. If this flag is set, generated files will
not be managed by the script - in particular they will not be
automatically deleted.
Default: /home/backuper/.rsync_tmbackup
--strategy Set the expiration strategy. Default: "1:1 30:7 365:30" means after one
day, keep one backup per day. After 30 days, keep one backup every 7 days.
After 365 days keep one backup every 30 days.
--no-auto-expire Disable automatically deleting backups when out of space. Instead an error
is logged, and the backup is aborted.
## Features
@ -88,10 +93,9 @@ The script is designed so that only one backup operation can be active for a giv
## Rsync options
To display the rsync options that are used for backup, run `./rsync_tmbackup.sh --rsync-get-flags`. It is also possible to add or remove options using the `--rsync-set-flags` option. For example, to exclude backing up permissions and groups:
To display the rsync options that are used for backup, run `./rsync_tmbackup.sh --rsync-get-flags`. It is also possible to add or remove options using the `--rsync-append-flags` or `--rsync-set-flags` option. For example, to exclude backing up permissions and groups:
rsync_tmbackup --rsync-set-flags "--numeric-ids --links --hard-links \
--one-file-system --archive --no-perms --no-group --itemize-changes" /src /dest
rsync_tmbackup --rsync-append-flags "--no-perms --no-group" /src /dest
## No automatic backup expiration