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etcdctl: update README on environment variables

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Gyu-Ho Lee 2016-10-14 11:16:25 -07:00
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commit 66f9e81c9a
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etcdctl/README.md
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@ -4,6 +4,17 @@ etcdctl
`etcdctl` is a command line client for [etcd][etcd]. `etcdctl` is a command line client for [etcd][etcd].
Make sure to set environment variable `ETCDCTL_API=3`. For etcdctl v2, please check [READMEv2][READMEv2]. Make sure to set environment variable `ETCDCTL_API=3`. For etcdctl v2, please check [READMEv2][READMEv2].
Global flags (e.g., `dial-timeout`, `--cacert`, `--cert`, `--key`) can be set with environment variables:
```
ETCDCTL_DIAL_TIMEOUT=3s
ETCDCTL_CACERT=/tmp/ca.pem
ETCDCTL_CERT=/tmp/cert.pem
ETCDCTL_KEY=/tmp/key.pem
```
Prefix flag strings with `ETCDCTL_`, convert all letters to upper-case, and replace dash(`-`) with underscore(`_`).
## Commands ## Commands
### VERSION ### VERSION