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Fixed sponge instructions

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This commit is contained in:
Mike Farah 2020-01-11 16:01:32 +11:00
parent eeeeeffd7b
commit f18c5161e0
1 changed files with 3 additions and 3 deletions
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README.md
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@ -35,16 +35,16 @@ snap install yq
`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
sudo cat /etc/myfile | yq r - a.path
```
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
sudo cat /etc/myfile | yq w - a.path value | sudo sponge /etc/myfile
```
or write to a temporary file:
```
sudo cat /etc/myfile | yq -r - somecommand | sudo tee /etc/myfile.tmp
sudo cat /etc/myfile | yq w - a.path value | sudo tee /etc/myfile.tmp
sudo mv /etc/myfile.tmp /etc/myfile
rm /etc/myfile.tmp
```