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Added snap specific notes 

https://forum.snapcraft.io/t/requesting-classic-confinement-for-yq/10559
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Mike Farah 2019-03-27 09:27:07 +11:00
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README.md
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@ -8,21 +8,40 @@ a lightweight and portable command-line YAML processor
The aim of the project is to be the [jq](https://github.com/stedolan/jq) or sed of yaml files.
## Install
On MacOS:
### On MacOS:
```
brew install yq
```
On Ubuntu and other Linux distros supporting `snap` packages:
### On Ubuntu and other Linux distros supporting `snap` packages:
```
snap install yq
```
On Ubuntu 16.04 or higher from Debian package:
#### Snap notes
`yq` installs with with [_strict confinement_](https://docs.snapcraft.io/snap-confinement/6233) in snap, this means it doesn't have direct access to root files. To read root files you can:
```
sudo cat /etc/myfile | yq -r - somecommand
```
And to write to a root file you can either use [sponge](https://linux.die.net/man/1/sponge):
```
sudo cat /etc/myfile | yq -r - somecommand | sudo sponge /etc/myfile
```
or write to a temporary file:
```
sudo cat /etc/myfile | yq -r - somecommand | sudo tee /etc/myfile.tmp
sudo mv /etc/myfile.tmp /etc/myfile
rm /etc/myfile.tmp
```
### On Ubuntu 16.04 or higher from Debian package:
```
sudo add-apt-repository ppa:rmescandon/yq
sudo apt update
sudo apt install yq -y
```
or, [Download latest binary](https://github.com/mikefarah/yq/releases/latest) or alternatively:
### or, [Download latest binary](https://github.com/mikefarah/yq/releases/latest) or alternatively:
```
go get gopkg.in/mikefarah/yq.v2
```