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libnss_homehosts

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Linux NSS library supports ~/.hosts

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# libnss_homehosts

Linux NSS library supporting per-user hosts resolution using `${XDG_CONFIG_HOME}/hosts` or `~/.hosts`

# Install

* Compile the code:
```bash
$ make
```
* Install the resulting library:
```bash
$ sudo make install
```
* Preprend the NSS module to the hosts line of `/etc/nsswitch.conf`:
```text
hosts: homehosts files dns
```

# Uninstall

* Uninstall the library:
```bash
$ sudo make uninstall
```
* Remove the added module from `/etc/nsswitch.conf`.

# Usage

* Create `~/.hosts` file and put some host names in it like `/etc/hosts`:
```text
127.0.0.1  myhost.example.net
```
* Check it
```bash
$ getent hosts myhost.example.net
$ ping myhost.example.net
```
Note that looking up the using `host` or `nslookup` will not work as these tools query DNS directly, sidestepping NSS.

# Performance

It is better to have FQDN as in `/etc/hosts`, as well in `~/.hosts` files, eg.

198.18.1.1 frodo.baggins.theshire

instead of

198.18.1.1 frodo

in order to avoid _dns suffix-list_ expansion by libresolv when unneccessary.

Refer to `ndots` option at resolv.conf(5).

# issues
Please submit issues via PR to some file `<TITLE>.txt` or `<TITLE>.md` on `issues` branch.

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