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Updated README and mentioned built-in lock

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Laurent Cozic
2017-06-03 15:39:19 +01:00
parent b41589ec77
commit b85bf9a6e5
1 changed files with 5 additions and 5 deletions
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README.md
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@@ -41,10 +41,6 @@ On macOS, it has a few disadvantages compared to Time Machine - in particular it
0 */1 * * * if [[ -d /mnt/backup ]]; then rsync_tmbackup.sh /home /mnt/backup; fi
* The use of `flock` is recommended so that only one instance of the script runs at a given time:
flock -n /tmp/rsync_tmbackup.lock rsync_tmbackup.sh /home /mnt/backup
## Backup expiration logic
The script automatically deletes old backups using the following logic:
@@ -57,6 +53,10 @@ The script automatically deletes old backups using the following logic:
An optional exclude file can be provided as a third parameter. It should be compatible with the `--exclude-from` parameter of rsync. See [this tutorial](https://sites.google.com/site/rsync2u/home/rsync-tutorial/the-exclude-from-option) for more information.
## Built-in lock
The script is designed so that only one backup operation can be active for a given directory. If a new backup operation is started while another is still active (i.e. it has not finished yet), the new one will be automaticalled interrupted. Thanks to this the use of `flock` to run the script is not necessary.
## 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: