backup syntax
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@ -8,22 +8,21 @@ tags: [ "tar", "backups", ".tgz", "tar.gz" ]
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Combine many files and directories into a single t-archive file.
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```bash
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```sh
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tar cf "$ARCHIVE".tar $DIR
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```
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You can remember this with the mnemonic '*C*reate *F*ile'.
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Unfortunately, this stores the full file path, so making a tar archive of `/etc/nginx/` will store `etc/nginx` (without the leading `/`.
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Unfortunately, this stores the full file path, so making a tar archive of `/etc/nginx/` will store `etc/nginx` (without the leading `/`).
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It's often better to tell tar which path to start from using the `-C` flag.
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```bash
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```sh
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tar cf "$ARCHIVE".tar -C /etc/ nginx
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```
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Check the contents of your archive with:
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```bash
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```sh
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tar tf "$ARCHIVE".tar
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```
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@ -31,7 +30,7 @@ If you want to store 'everything in a directory', then using `*` will not work,
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Instead, you can store the target in a variable:
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```bash
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```sh
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files=$(ls /etc/nginx)
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tar cf "$ARCHIVE".tar -C /etc/nginx/ $file
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```
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@ -40,7 +39,9 @@ tar cf "$ARCHIVE".tar -C /etc/nginx/ $file
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Extract the tar archive with
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> tar xf "$ARCHIVE".tar
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```sh
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tar xf "$ARCHIVE".tar
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```
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You can remember this with the mnemonic 'e*X*tract *F*ile'.
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@ -48,7 +49,7 @@ You can remember this with the mnemonic 'e*X*tract *F*ile'.
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Create a zip-compressed archive with the `z` flag.
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```bash
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```sh
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tar czf "$ARCHIVE".tgz -C /etc/nginx/ $file
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```
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@ -60,18 +61,16 @@ You can use any file ending you want, but sane people like to use '.tgz' or '.ta
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Make archive:
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```bash
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PASSWORD=my_password
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```
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```bash
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7za a -tzip -p$PASSWORD -mem=AES256 $ARCHIVE.zip $FILE_1 $FILE_2
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```sh
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7za a -tzip -p "$PASSWORD" -mem=AES256 $ARCHIVE.zip $FILE_1 $FILE_2
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```
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Note that people can still see every filename in your archive, and can change those files.
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They just can't read the contents.
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Unzip:
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```bash
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```sh
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7za x archive.zip
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```
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@ -5,7 +5,7 @@ tags: [ "backups", "synch" ]
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Install unison on both machines, and make sure both have the same version of unison, with the same version of the ocaml compiler (the smallest difference will cause problems).
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```bash
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```sh
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unison -version
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```
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@ -13,14 +13,14 @@ Create the `~/.unison` directory on both machines.
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Make a job called `backup`:
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```bash
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```sh
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JOB=backup
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```
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Here is an example job, which synchronizes the `~/music` directory with a remote machine which has the same username.
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```bash
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```sh
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echo "
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auto = true
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root=$HOME
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@ -42,7 +42,7 @@ The last command means it will ignore any file with a name ending in `.flac`.
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The first command means this will run but also confirm which files will be deleted, and which will be transferred, us `batch = true` instead.
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Or you can deleted that line in the `.prf` file and run it with a flag:
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```bash
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```sh
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unison -batch *backup*.prf
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```
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