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# dots-backup
Bash script to back up dotfiles into a local git repo, and restore them on any system.
## Requirements
- `bash`
- `rsync`
- `git`
## How It Works
`dot-backup.sh` reads a list of dotfiles, copies them into a local git repo using `rsync`, then auto-commits any changes.
Backup layout:
```
~/Programming/GIT/my-dotfiles/
├── home/ # files from $HOME (relative paths)
│ ├── .bashrc
│ ├── .gitconfig
│ └── .config/
│ └── nvim/
└── system/ # files from / (absolute paths)
└── etc/
└── bash_completion.d/
```
## First Run
```bash
git clone https://github.com/you/dots-backup
cd dots-backup
./dot-backup.sh
```
On first run the script:
1. Creates `~/.config/dot-backup/` and `~/.local/share/dot-backup/` and prints a short setup summary
2. Creates `~/Programming/GIT/my-dotfiles/{home,system}` and initializes a git repo inside it
3. Runs the backup immediately using built-in defaults
Optionally set up a config file and custom files list (script will tell you the exact paths):
```bash
cp config.example ~/.config/dot-backup/config
touch ~/.config/dot-backup/files.list
```
Add a remote to the backup repo so you can push:
```bash
cd ~/Programming/GIT/my-dotfiles
git remote add origin git@github.com:you/my-dotfiles.git
git push -u origin master
```
## Usage
```
./dot-backup.sh [options]
-n, --dry-run Show what would be copied without copying
-v, --verbose Print each file as rsync transfers it
-r, --restore Restore dotfiles from backup to original locations
-q, --quiet Suppress stdout; write output to log instead
-p, --push Push to remote after commit
-h, --help Show this help
```
## Daily Routine
Run manually after changing config:
```bash
./dot-backup.sh
```
Or automate with cron (silent, logs to `~/.local/share/dot-backup/backup.log`):
```bash
# crontab -e
0 * * * * /path/to/dot-backup.sh -q
```
Push manually after backup:
```bash
cd ~/Programming/GIT/my-dotfiles && git push
```
Or set `GIT_REMOTE` in config and use `-p` to push automatically:
```bash
./dot-backup.sh -p
# or combined with cron:
./dot-backup.sh -q -p
```
## Restoring on a New Machine
Preview what would be restored first:
```bash
./dot-backup.sh -r --dry-run
```
Then restore:
```bash
./dot-backup.sh -r
```
System files (absolute paths like `/etc/bash_completion.d`) may need `sudo`.
## Configuration
Copy `config.example` to `~/.config/dot-backup/config` and edit:
```bash
cp config.example ~/.config/dot-backup/config
```
Available options:
```bash
DEFAULT_OUTPUT_DIR="${HOME}/Programming/GIT/my-dotfiles"
LOG_FILE="${HOME}/.local/share/dot-backup/backup.log"
DOTFILES_LIST="${HOME}/.config/dot-backup/files.list"
GIT_REMOTE="git@github.com:you/my-dotfiles.git"
GIT_BRANCH="master"
```
`GIT_REMOTE` — if set, script ensures it is registered as `origin` on every run. Required for `--push`. `GIT_BRANCH` defaults to the current branch if unset.
## Adding Files
**Edit the script** — add paths to the `DOTFILES` array in `dot-backup.sh`.
**Or use the external list** — add paths to `~/.config/dot-backup/files.list`, one per line:
```
# extra dotfiles
.config/myapp
.config/otherapp.conf
/etc/hosts
```
Relative paths are treated as `$HOME`-relative. Absolute paths (starting with `/`) are treated as system files.
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