mirror of
https://github.com/jbranchaud/til
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41 lines
1.3 KiB
Markdown
41 lines
1.3 KiB
Markdown
# Do A Dry Run Of An rsync
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The `rsync` command, especially when running recursively (with the `-a` flag),
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will create and update a bunch of directories and files. Because of that, you
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may want to do a _dry run_ of an `rsync` command to make sure it is touching
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the intended files.
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The `--dry-run` flag (or the `-n` flag for short) will prepare a
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synchronization of one directory to another. You can use this flag to be sure
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that the source and target files and directories are correct.
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The `-n` (or `--dry-run`) flag on its own won't _show_ what is going to get
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synced. To get that information, you need to combine it with the `-v` (verbose)
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flag.
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```bash
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$ rsync -anv til-temp/ til-content
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building file list ... done
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./
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LICENSE
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...
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sent 909 bytes received 296 bytes 2410.00 bytes/sec
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total size is 1058 speedup is 0.88
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```
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That will show everything that is going to be synced from `til-temp/`
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recursively to `til-content`.
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Doing a dry run is a great way to make sure you have the patterns for
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`--exclude` flags correct, before actually syncing anything.
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```bash
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$ rsync -anv --exclude='./*.md' --exclude='.*' til-temp/ til-content
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```
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That excludes top-level markdown files and all dotfiles and dot-directories.
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[source](https://www.digitalocean.com/community/tutorials/how-to-use-rsync-to-sync-local-and-remote-directories)
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