From c6cd290932419d7ff442dcf18066f7580ca01a02 Mon Sep 17 00:00:00 2001
From: shimataro <shimataro@zelkova.cc>
Date: Fri, 7 Feb 2020 05:54:57 +0900
Subject: [PATCH 1/5] * update CI URL (#104)

---
 README.md | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/README.md b/README.md
index 55fa515..f206c16 100644
--- a/README.md
+++ b/README.md
@@ -126,15 +126,15 @@ The scripts and documentation in this project are released under the [MIT Licens
 See [CHANGELOG.md](CHANGELOG.md).
 
 [image-build]: https://github.com/shimataro/ssh-key-action/workflows/Build/badge.svg?event=push&branch=v1
-[link-build]: https://github.com/shimataro/ssh-key-action
+[link-build]: https://github.com/shimataro/ssh-key-action/actions?query=workflow%3ABuild
 [image-verify-windows]: https://github.com/shimataro/ssh-key-action/workflows/Windows/badge.svg?event=push&branch=v1
-[link-verify-windows]: https://github.com/shimataro/ssh-key-action
+[link-verify-windows]: https://github.com/shimataro/ssh-key-action/actions?query=workflow%3AWindows
 [image-verify-macos]: https://github.com/shimataro/ssh-key-action/workflows/macOS/badge.svg?event=push&branch=v1
-[link-verify-macos]: https://github.com/shimataro/ssh-key-action
+[link-verify-macos]: https://github.com/shimataro/ssh-key-action/actions?query=workflow%3AmacOS
 [image-verify-ubuntu]: https://github.com/shimataro/ssh-key-action/workflows/Ubuntu/badge.svg?event=push&branch=v1
-[link-verify-ubuntu]: https://github.com/shimataro/ssh-key-action
+[link-verify-ubuntu]: https://github.com/shimataro/ssh-key-action/actions?query=workflow%3AUbuntu
 [image-verify-ubuntu1604]: https://github.com/shimataro/ssh-key-action/workflows/Ubuntu%2016.04/badge.svg?event=push&branch=v1
-[link-verify-ubuntu1604]: https://github.com/shimataro/ssh-key-action
+[link-verify-ubuntu1604]: https://github.com/shimataro/ssh-key-action/actions?query=workflow%3A%22Ubuntu+16.04%22
 [image-release]: https://img.shields.io/github/release/shimataro/ssh-key-action.svg
 [link-release]: https://github.com/shimataro/ssh-key-action/releases
 [image-license]: https://img.shields.io/github/license/shimataro/ssh-key-action.svg

From 806ebadbbe5dd9f210ef11016c9a45763051b9ba Mon Sep 17 00:00:00 2001
From: shimataro <shimataro@zelkova.cc>
Date: Fri, 7 Feb 2020 05:56:43 +0900
Subject: [PATCH 2/5] * refactor YAML file (#105)

---
 .eslintrc.yml | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/.eslintrc.yml b/.eslintrc.yml
index bbe1f10..07b4cfe 100644
--- a/.eslintrc.yml
+++ b/.eslintrc.yml
@@ -3,9 +3,9 @@ env: # https://eslint.org/docs/user-guide/configuring#specifying-environments
   es6: true
   node: true
 extends:
-  - eslint:recommended
-  - plugin:@typescript-eslint/eslint-recommended
-  - plugin:@typescript-eslint/recommended
+- eslint:recommended
+- plugin:@typescript-eslint/eslint-recommended
+- plugin:@typescript-eslint/recommended
 plugins:
 - import
 - "@typescript-eslint"

From aba3f4cae990b8d352578aa6b51c416cba60fddc Mon Sep 17 00:00:00 2001
From: shimataro <shimataro@zelkova.cc>
Date: Fri, 7 Feb 2020 20:57:04 +0900
Subject: [PATCH 3/5] Feature/private key (#71)

* * rename private-key to key

* * update CI

* * update README / CHANGELOG
---
 .github/workflows/verify-on-macos.yml      | 4 ++--
 .github/workflows/verify-on-ubuntu.yml     | 4 ++--
 .github/workflows/verify-on-ubuntu1604.yml | 4 ++--
 .github/workflows/verify-on-windows.yml    | 4 ++--
 CHANGELOG.md                               | 4 ++++
 README.md                                  | 8 ++++----
 action.yml                                 | 4 ++--
 lib/main.js                                | 2 +-
 lib/main.js.map                            | 2 +-
 src/main.ts                                | 2 +-
 10 files changed, 21 insertions(+), 17 deletions(-)

diff --git a/.github/workflows/verify-on-macos.yml b/.github/workflows/verify-on-macos.yml
index 9fd095f..14653ca 100644
--- a/.github/workflows/verify-on-macos.yml
+++ b/.github/workflows/verify-on-macos.yml
@@ -12,7 +12,7 @@ jobs:
     - name: Install SSH key
       uses: ./.
       with:
-        private-key: ${{ secrets.SSH_KEY }}
+        key: ${{ secrets.SSH_KEY }}
         known-hosts: ${{ secrets.KNOWN_HOSTS }} # optional
     - name: print created files
       run: ls -l ~/.ssh
@@ -27,7 +27,7 @@ jobs:
     - name: Install SSH key
       uses: ./.
       with:
-        private-key: ${{ secrets.SSH_KEY }}
+        key: ${{ secrets.SSH_KEY }}
         known-hosts: ${{ secrets.KNOWN_HOSTS }} # optional
         name: ssh_key_name # optional
         config: | # optional
diff --git a/.github/workflows/verify-on-ubuntu.yml b/.github/workflows/verify-on-ubuntu.yml
index e35a29d..f50b4cd 100644
--- a/.github/workflows/verify-on-ubuntu.yml
+++ b/.github/workflows/verify-on-ubuntu.yml
@@ -12,7 +12,7 @@ jobs:
     - name: Install SSH key
       uses: ./.
       with:
-        private-key: ${{ secrets.SSH_KEY }}
+        key: ${{ secrets.SSH_KEY }}
         known-hosts: ${{ secrets.KNOWN_HOSTS }} # optional
     - name: print created files
       run: ls -l ~/.ssh
@@ -27,7 +27,7 @@ jobs:
     - name: Install SSH key
       uses: ./.
       with:
-        private-key: ${{ secrets.SSH_KEY }}
+        key: ${{ secrets.SSH_KEY }}
         known-hosts: ${{ secrets.KNOWN_HOSTS }} # optional
         name: ssh_key_name # optional
         config: | # optional
diff --git a/.github/workflows/verify-on-ubuntu1604.yml b/.github/workflows/verify-on-ubuntu1604.yml
index 8c8a87b..7024e65 100644
--- a/.github/workflows/verify-on-ubuntu1604.yml
+++ b/.github/workflows/verify-on-ubuntu1604.yml
@@ -12,7 +12,7 @@ jobs:
     - name: Install SSH key
       uses: ./.
       with:
-        private-key: ${{ secrets.SSH_KEY }}
+        key: ${{ secrets.SSH_KEY }}
         known-hosts: ${{ secrets.KNOWN_HOSTS }} # optional
     - name: print created files
       run: ls -l ~/.ssh
@@ -27,7 +27,7 @@ jobs:
     - name: Install SSH key
       uses: ./.
       with:
-        private-key: ${{ secrets.SSH_KEY }}
+        key: ${{ secrets.SSH_KEY }}
         known-hosts: ${{ secrets.KNOWN_HOSTS }} # optional
         name: ssh_key_name # optional
         config: | # optional
diff --git a/.github/workflows/verify-on-windows.yml b/.github/workflows/verify-on-windows.yml
index 7e40adb..a2332dd 100644
--- a/.github/workflows/verify-on-windows.yml
+++ b/.github/workflows/verify-on-windows.yml
@@ -12,7 +12,7 @@ jobs:
     - name: Install SSH key
       uses: ./.
       with:
-        private-key: ${{ secrets.SSH_KEY }}
+        key: ${{ secrets.SSH_KEY }}
         known-hosts: ${{ secrets.KNOWN_HOSTS }} # optional
     - name: print created files
       run: ls ~/.ssh
@@ -27,7 +27,7 @@ jobs:
     - name: Install SSH key
       uses: ./.
       with:
-        private-key: ${{ secrets.SSH_KEY }}
+        key: ${{ secrets.SSH_KEY }}
         known-hosts: ${{ secrets.KNOWN_HOSTS }} # optional
         name: ssh_key_name # optional
         config: | # optional
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1525d69..8746d25 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Changed
+
+* rename `private-key` to `key`
+
 ## [1.6.4] - 2020-01-27
 
 ### Fixed
diff --git a/README.md b/README.md
index f206c16..d3e9bc7 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,7 @@ steps:
 - name: Install SSH key
   uses: shimataro/ssh-key-action@v1
   with:
-    private-key: ${{ secrets.SSH_KEY }}
+    key: ${{ secrets.SSH_KEY }}
     name: id_rsa # optional
     known-hosts: ${{ secrets.KNOWN_HOSTS }} # known_hosts; optional
     config: ${{ secrets.CONFIG }} # ssh_config; optional
@@ -42,7 +42,7 @@ See [Workflow syntax for GitHub Actions](https://help.github.com/en/articles/wor
 If you want to install multiple keys, call this action multiple times.
 It is useful for port forwarding.
 
-**NOTE:**  When this action is called multiple times, **the contents of `known-hosts` and `config` will be appended**. `private-key` must be saved as different name, by using `name` option.
+**NOTE:**  When this action is called multiple times, **the contents of `known-hosts` and `config` will be appended**. `key` must be saved as different name, by using `name` option.
 
 ```yaml
 runs-on: ubuntu-latest
@@ -50,7 +50,7 @@ steps:
 - name: Install SSH key of bastion
   uses: shimataro/ssh-key-action@v1
   with:
-    private-key: ${{ secrets.SSH_KEY_OF_BASTION }}
+    key: ${{ secrets.SSH_KEY_OF_BASTION }}
     name: id_rsa-bastion
     known-hosts: ${{ secrets.KNOWN_HOSTS_OF_BASTION }}
     config: |
@@ -61,7 +61,7 @@ steps:
 - name: Install SSH key of target
   uses: shimataro/ssh-key-action@v1
   with:
-    private-key: ${{ secrets.SSH_KEY_OF_TARGET }}
+    key: ${{ secrets.SSH_KEY_OF_TARGET }}
     name: id_rsa-target
     known-hosts: ${{ secrets.KNOWN_HOSTS_OF_TARGET }} # will be appended!
     config: |                                         # will be appended!
diff --git a/action.yml b/action.yml
index 734fd12..9974c8b 100644
--- a/action.yml
+++ b/action.yml
@@ -6,8 +6,8 @@ branding:
   icon: "terminal"
   color: "gray-dark"
 inputs:
-  private-key:
-    description: "private SSH key"
+  key:
+    description: "SSH private key"
     required: true
   name:
     description: "SSH key file name (default: id_rsa)"
diff --git a/lib/main.js b/lib/main.js
index 1360411..ede1edf 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -18,7 +18,7 @@ function main() {
         const files = [
             {
                 name: core.getInput("name"),
-                contents: core.getInput("private-key", {
+                contents: core.getInput("key", {
                     required: true,
                 }),
                 options: {
diff --git a/lib/main.js.map b/lib/main.js.map
index 6148a6d..43bb0e4 100644
--- a/lib/main.js.map
+++ b/lib/main.js.map
@@ -1 +1 @@
-{"version":3,"file":"main.js","sourceRoot":"","sources":["../src/main.ts"],"names":[],"mappings":";;;;;;;;;AAAA,uCAAyB;AACzB,2CAA6B;AAE7B,oDAAsC;AAStC;;GAEG;AACH,SAAS,IAAI;IAEZ,IACA;QACC,MAAM,KAAK,GAAe;YACzB;gBACC,IAAI,EAAE,IAAI,CAAC,QAAQ,CAAC,MAAM,CAAC;gBAC3B,QAAQ,EAAE,IAAI,CAAC,QAAQ,CAAC,aAAa,EAAE;oBACtC,QAAQ,EAAE,IAAI;iBACd,CAAC;gBACF,OAAO,EAAE;oBACR,IAAI,EAAE,KAAK;oBACX,IAAI,EAAE,IAAI;iBACV;aACD;YACD;gBACC,IAAI,EAAE,aAAa;gBACnB,QAAQ,EAAE,SAAS,CAAC,IAAI,CAAC,QAAQ,CAAC,aAAa,CAAC,CAAC;gBACjD,OAAO,EAAE;oBACR,IAAI,EAAE,KAAK;oBACX,IAAI,EAAE,GAAG;iBACT;aACD;YACD;gBACC,IAAI,EAAE,QAAQ;gBACd,QAAQ,EAAE,SAAS,CAAC,IAAI,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;gBAC5C,OAAO,EAAE;oBACR,IAAI,EAAE,KAAK;oBACX,IAAI,EAAE,GAAG;iBACT;aACD;SACD,CAAC;QAEF,0BAA0B;QAC1B,MAAM,IAAI,GAAG,gBAAgB,EAAE,CAAC;QAChC,MAAM,OAAO,GAAG,IAAI,CAAC,OAAO,CAAC,IAAI,EAAE,MAAM,CAAC,CAAC;QAC3C,EAAE,CAAC,SAAS,CAAC,OAAO,EAAE;YACrB,SAAS,EAAE,IAAI;YACf,IAAI,EAAE,KAAK;SACX,CAAC,CAAC;QAEH,eAAe;QACf,KAAI,MAAM,IAAI,IAAI,KAAK,EACvB;YACC,MAAM,QAAQ,GAAG,IAAI,CAAC,IAAI,CAAC,OAAO,EAAE,IAAI,CAAC,IAAI,CAAC,CAAC;YAC/C,EAAE,CAAC,aAAa,CAAC,QAAQ,EAAE,IAAI,CAAC,QAAQ,EAAE,IAAI,CAAC,OAAO,CAAC,CAAC;SACxD;QAED,OAAO,CAAC,GAAG,CAAC,8BAA8B,OAAO,gBAAgB,CAAC,CAAC;KACnE;IACD,OAAM,GAAG,EACT;QACC,IAAI,CAAC,SAAS,CAAC,GAAG,CAAC,OAAO,CAAC,CAAC;KAC5B;AACF,CAAC;AAED;;;GAGG;AACH,SAAS,gBAAgB;IAExB,MAAM,OAAO,GAAG,UAAU,EAAE,CAAC;IAC7B,MAAM,IAAI,GAAG,OAAO,CAAC,GAAG,CAAC,OAAO,CAAC,CAAC;IAClC,IAAG,IAAI,KAAK,SAAS,EACrB;QACC,MAAM,KAAK,CAAC,GAAG,OAAO,iBAAiB,CAAC,CAAC;KACzC;IAED,OAAO,IAAI,CAAC;AACb,CAAC;AAED;;;GAGG;AACH,SAAS,UAAU;IAElB,IAAG,OAAO,CAAC,QAAQ,KAAK,OAAO,EAC/B;QACC,UAAU;QACV,OAAO,aAAa,CAAC;KACrB;IAED,gBAAgB;IAChB,OAAO,MAAM,CAAC;AACf,CAAC;AAED;;;;GAIG;AACH,SAAS,SAAS,CAAC,KAAa;IAE/B,IAAG,KAAK,CAAC,MAAM,KAAK,CAAC,EACrB;QACC,sBAAsB;QACtB,OAAO,EAAE,CAAC;KACV;IAED,OAAO,KAAK,KAAK,EAAE,CAAC;AACrB,CAAC;AAED,IAAI,EAAE,CAAC"}
\ No newline at end of file
+{"version":3,"file":"main.js","sourceRoot":"","sources":["../src/main.ts"],"names":[],"mappings":";;;;;;;;;AAAA,uCAAyB;AACzB,2CAA6B;AAE7B,oDAAsC;AAStC;;GAEG;AACH,SAAS,IAAI;IAEZ,IACA;QACC,MAAM,KAAK,GAAe;YACzB;gBACC,IAAI,EAAE,IAAI,CAAC,QAAQ,CAAC,MAAM,CAAC;gBAC3B,QAAQ,EAAE,IAAI,CAAC,QAAQ,CAAC,KAAK,EAAE;oBAC9B,QAAQ,EAAE,IAAI;iBACd,CAAC;gBACF,OAAO,EAAE;oBACR,IAAI,EAAE,KAAK;oBACX,IAAI,EAAE,IAAI;iBACV;aACD;YACD;gBACC,IAAI,EAAE,aAAa;gBACnB,QAAQ,EAAE,SAAS,CAAC,IAAI,CAAC,QAAQ,CAAC,aAAa,CAAC,CAAC;gBACjD,OAAO,EAAE;oBACR,IAAI,EAAE,KAAK;oBACX,IAAI,EAAE,GAAG;iBACT;aACD;YACD;gBACC,IAAI,EAAE,QAAQ;gBACd,QAAQ,EAAE,SAAS,CAAC,IAAI,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;gBAC5C,OAAO,EAAE;oBACR,IAAI,EAAE,KAAK;oBACX,IAAI,EAAE,GAAG;iBACT;aACD;SACD,CAAC;QAEF,0BAA0B;QAC1B,MAAM,IAAI,GAAG,gBAAgB,EAAE,CAAC;QAChC,MAAM,OAAO,GAAG,IAAI,CAAC,OAAO,CAAC,IAAI,EAAE,MAAM,CAAC,CAAC;QAC3C,EAAE,CAAC,SAAS,CAAC,OAAO,EAAE;YACrB,SAAS,EAAE,IAAI;YACf,IAAI,EAAE,KAAK;SACX,CAAC,CAAC;QAEH,eAAe;QACf,KAAI,MAAM,IAAI,IAAI,KAAK,EACvB;YACC,MAAM,QAAQ,GAAG,IAAI,CAAC,IAAI,CAAC,OAAO,EAAE,IAAI,CAAC,IAAI,CAAC,CAAC;YAC/C,EAAE,CAAC,aAAa,CAAC,QAAQ,EAAE,IAAI,CAAC,QAAQ,EAAE,IAAI,CAAC,OAAO,CAAC,CAAC;SACxD;QAED,OAAO,CAAC,GAAG,CAAC,8BAA8B,OAAO,gBAAgB,CAAC,CAAC;KACnE;IACD,OAAM,GAAG,EACT;QACC,IAAI,CAAC,SAAS,CAAC,GAAG,CAAC,OAAO,CAAC,CAAC;KAC5B;AACF,CAAC;AAED;;;GAGG;AACH,SAAS,gBAAgB;IAExB,MAAM,OAAO,GAAG,UAAU,EAAE,CAAC;IAC7B,MAAM,IAAI,GAAG,OAAO,CAAC,GAAG,CAAC,OAAO,CAAC,CAAC;IAClC,IAAG,IAAI,KAAK,SAAS,EACrB;QACC,MAAM,KAAK,CAAC,GAAG,OAAO,iBAAiB,CAAC,CAAC;KACzC;IAED,OAAO,IAAI,CAAC;AACb,CAAC;AAED;;;GAGG;AACH,SAAS,UAAU;IAElB,IAAG,OAAO,CAAC,QAAQ,KAAK,OAAO,EAC/B;QACC,UAAU;QACV,OAAO,aAAa,CAAC;KACrB;IAED,gBAAgB;IAChB,OAAO,MAAM,CAAC;AACf,CAAC;AAED;;;;GAIG;AACH,SAAS,SAAS,CAAC,KAAa;IAE/B,IAAG,KAAK,CAAC,MAAM,KAAK,CAAC,EACrB;QACC,sBAAsB;QACtB,OAAO,EAAE,CAAC;KACV;IAED,OAAO,KAAK,KAAK,EAAE,CAAC;AACrB,CAAC;AAED,IAAI,EAAE,CAAC"}
\ No newline at end of file
diff --git a/src/main.ts b/src/main.ts
index 48fbd44..62a5520 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -20,7 +20,7 @@ function main(): void
 		const files: FileInfo[] = [
 			{
 				name: core.getInput("name"),
-				contents: core.getInput("private-key", {
+				contents: core.getInput("key", {
 					required: true,
 				}),
 				options: {

From 326c0f5ec98102c01fd0b8fba81d7da2fed30d81 Mon Sep 17 00:00:00 2001
From: shimataro <shimataro@zelkova.cc>
Date: Sat, 8 Feb 2020 07:40:05 +0900
Subject: [PATCH 4/5] Feature/rename known hosts (#72)

* * rename known-hosts to known_hosts

* * update CI

* * update README

* * update CHANGELOG

* * update README
---
 .github/workflows/verify-on-macos.yml      |  4 ++--
 .github/workflows/verify-on-ubuntu.yml     |  4 ++--
 .github/workflows/verify-on-ubuntu1604.yml |  4 ++--
 .github/workflows/verify-on-windows.yml    |  4 ++--
 CHANGELOG.md                               |  1 +
 README.md                                  | 14 +++++++-------
 action.yml                                 |  2 +-
 lib/main.js                                |  2 +-
 src/main.ts                                |  2 +-
 9 files changed, 19 insertions(+), 18 deletions(-)

diff --git a/.github/workflows/verify-on-macos.yml b/.github/workflows/verify-on-macos.yml
index 14653ca..469120b 100644
--- a/.github/workflows/verify-on-macos.yml
+++ b/.github/workflows/verify-on-macos.yml
@@ -13,7 +13,7 @@ jobs:
       uses: ./.
       with:
         key: ${{ secrets.SSH_KEY }}
-        known-hosts: ${{ secrets.KNOWN_HOSTS }} # optional
+        known_hosts: ${{ secrets.KNOWN_HOSTS }} # optional
     - name: print created files
       run: ls -l ~/.ssh
     - name: git clone through SSH
@@ -28,7 +28,7 @@ jobs:
       uses: ./.
       with:
         key: ${{ secrets.SSH_KEY }}
-        known-hosts: ${{ secrets.KNOWN_HOSTS }} # optional
+        known_hosts: ${{ secrets.KNOWN_HOSTS }} # optional
         name: ssh_key_name # optional
         config: | # optional
           Host github
diff --git a/.github/workflows/verify-on-ubuntu.yml b/.github/workflows/verify-on-ubuntu.yml
index f50b4cd..e6548e1 100644
--- a/.github/workflows/verify-on-ubuntu.yml
+++ b/.github/workflows/verify-on-ubuntu.yml
@@ -13,7 +13,7 @@ jobs:
       uses: ./.
       with:
         key: ${{ secrets.SSH_KEY }}
-        known-hosts: ${{ secrets.KNOWN_HOSTS }} # optional
+        known_hosts: ${{ secrets.KNOWN_HOSTS }} # optional
     - name: print created files
       run: ls -l ~/.ssh
     - name: git clone through SSH
@@ -28,7 +28,7 @@ jobs:
       uses: ./.
       with:
         key: ${{ secrets.SSH_KEY }}
-        known-hosts: ${{ secrets.KNOWN_HOSTS }} # optional
+        known_hosts: ${{ secrets.KNOWN_HOSTS }} # optional
         name: ssh_key_name # optional
         config: | # optional
           Host github
diff --git a/.github/workflows/verify-on-ubuntu1604.yml b/.github/workflows/verify-on-ubuntu1604.yml
index 7024e65..b3cce08 100644
--- a/.github/workflows/verify-on-ubuntu1604.yml
+++ b/.github/workflows/verify-on-ubuntu1604.yml
@@ -13,7 +13,7 @@ jobs:
       uses: ./.
       with:
         key: ${{ secrets.SSH_KEY }}
-        known-hosts: ${{ secrets.KNOWN_HOSTS }} # optional
+        known_hosts: ${{ secrets.KNOWN_HOSTS }} # optional
     - name: print created files
       run: ls -l ~/.ssh
     - name: git clone through SSH
@@ -28,7 +28,7 @@ jobs:
       uses: ./.
       with:
         key: ${{ secrets.SSH_KEY }}
-        known-hosts: ${{ secrets.KNOWN_HOSTS }} # optional
+        known_hosts: ${{ secrets.KNOWN_HOSTS }} # optional
         name: ssh_key_name # optional
         config: | # optional
           Host github
diff --git a/.github/workflows/verify-on-windows.yml b/.github/workflows/verify-on-windows.yml
index a2332dd..003466f 100644
--- a/.github/workflows/verify-on-windows.yml
+++ b/.github/workflows/verify-on-windows.yml
@@ -13,7 +13,7 @@ jobs:
       uses: ./.
       with:
         key: ${{ secrets.SSH_KEY }}
-        known-hosts: ${{ secrets.KNOWN_HOSTS }} # optional
+        known_hosts: ${{ secrets.KNOWN_HOSTS }} # optional
     - name: print created files
       run: ls ~/.ssh
     - name: git clone through SSH
@@ -28,7 +28,7 @@ jobs:
       uses: ./.
       with:
         key: ${{ secrets.SSH_KEY }}
-        known-hosts: ${{ secrets.KNOWN_HOSTS }} # optional
+        known_hosts: ${{ secrets.KNOWN_HOSTS }} # optional
         name: ssh_key_name # optional
         config: | # optional
           Host github
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8746d25..55bebe3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### Changed
 
 * rename `private-key` to `key`
+* rename `known-hosts` to `known_hosts`
 
 ## [1.6.4] - 2020-01-27
 
diff --git a/README.md b/README.md
index d3e9bc7..ac298dc 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@ steps:
   with:
     key: ${{ secrets.SSH_KEY }}
     name: id_rsa # optional
-    known-hosts: ${{ secrets.KNOWN_HOSTS }} # known_hosts; optional
+    known_hosts: ${{ secrets.KNOWN_HOSTS }} # optional
     config: ${{ secrets.CONFIG }} # ssh_config; optional
 - name: rsync over ssh
   run: rsync ./foo/ user@remote:bar/
@@ -42,7 +42,7 @@ See [Workflow syntax for GitHub Actions](https://help.github.com/en/articles/wor
 If you want to install multiple keys, call this action multiple times.
 It is useful for port forwarding.
 
-**NOTE:**  When this action is called multiple times, **the contents of `known-hosts` and `config` will be appended**. `key` must be saved as different name, by using `name` option.
+**NOTE:**  When this action is called multiple times, **the contents of `known_hosts` and `config` will be appended**. `key` must be saved as different name, by using `name` option.
 
 ```yaml
 runs-on: ubuntu-latest
@@ -52,7 +52,7 @@ steps:
   with:
     key: ${{ secrets.SSH_KEY_OF_BASTION }}
     name: id_rsa-bastion
-    known-hosts: ${{ secrets.KNOWN_HOSTS_OF_BASTION }}
+    known_hosts: ${{ secrets.KNOWN_HOSTS_OF_BASTION }}
     config: |
       Host bastion
         HostName xxx.xxx.xxx.xxx
@@ -63,7 +63,7 @@ steps:
   with:
     key: ${{ secrets.SSH_KEY_OF_TARGET }}
     name: id_rsa-target
-    known-hosts: ${{ secrets.KNOWN_HOSTS_OF_TARGET }} # will be appended!
+    known_hosts: ${{ secrets.KNOWN_HOSTS_OF_TARGET }} # will be appended!
     config: |                                         # will be appended!
       Host target
         HostName yyy.yyy.yyy.yyy
@@ -84,9 +84,9 @@ Check belows:
     * OPENSSH format (key begins with `-----BEGIN OPENSSH PRIVATE KEY-----`) may not work.
     * Use PEM format (begins with `-----BEGIN RSA PRIVATE KEY-----`).
 * `Host key verification failed.`:
-    * Set `known-hosts` option or use `ssh -o StrictHostKeyChecking=no`.
+    * Set `known_hosts` option or use `ssh -o StrictHostKeyChecking=no`.
     * The former is **HIGHLY** recommended for security reason.
-    * I'm planning to make `known-hosts` required in v2.
+    * I'm planning to make `known_hosts` required in v2.
 
 ### How do I use encrypted SSH key?
 
@@ -104,7 +104,7 @@ I recommend **rsync via bastion**.
 It has some advantages over other methods:
 
 * "Rsync via bastion" doesn't require to update workflow files and `secrets` even if it is necessary to transfer files to multiple servers.
-    * Other methods require to update `known-hosts` if servers have changed.
+    * Other methods require to update `known_hosts` if servers have changed.
 * Rsync:
     * is fastest of all.
     * does **NOT** break files even if disconnected during transferring.
diff --git a/action.yml b/action.yml
index 9974c8b..aef5b4e 100644
--- a/action.yml
+++ b/action.yml
@@ -13,7 +13,7 @@ inputs:
     description: "SSH key file name (default: id_rsa)"
     required: false
     default: "id_rsa"
-  known-hosts:
+  known_hosts:
     description: "public keys of SSH servers"
     required: false
     default: ""
diff --git a/lib/main.js b/lib/main.js
index ede1edf..b97cccb 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -28,7 +28,7 @@ function main() {
             },
             {
                 name: "known_hosts",
-                contents: prependLf(core.getInput("known-hosts")),
+                contents: prependLf(core.getInput("known_hosts")),
                 options: {
                     mode: 0o644,
                     flag: "a",
diff --git a/src/main.ts b/src/main.ts
index 62a5520..b3aa60c 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -30,7 +30,7 @@ function main(): void
 			},
 			{
 				name: "known_hosts",
-				contents: prependLf(core.getInput("known-hosts")),
+				contents: prependLf(core.getInput("known_hosts")),
 				options: {
 					mode: 0o644,
 					flag: "a",

From fc07b00e5f464f247a25a55b9ff5ef001253ca42 Mon Sep 17 00:00:00 2001
From: shimataro <shimataro@zelkova.cc>
Date: Sat, 8 Feb 2020 08:26:57 +0900
Subject: [PATCH 5/5] Feature/known hosts required (#73)

* * make known-hosts required

* * update CI

* * update README

* * update CHANGELOG

* * update README
---
 .github/workflows/verify-on-macos.yml      | 4 ++--
 .github/workflows/verify-on-ubuntu.yml     | 4 ++--
 .github/workflows/verify-on-ubuntu1604.yml | 4 ++--
 .github/workflows/verify-on-windows.yml    | 4 ++--
 CHANGELOG.md                               | 1 +
 README.md                                  | 6 ++----
 action.yml                                 | 2 +-
 lib/main.js                                | 4 +++-
 lib/main.js.map                            | 2 +-
 src/main.ts                                | 4 +++-
 10 files changed, 19 insertions(+), 16 deletions(-)

diff --git a/.github/workflows/verify-on-macos.yml b/.github/workflows/verify-on-macos.yml
index 469120b..19ab8ee 100644
--- a/.github/workflows/verify-on-macos.yml
+++ b/.github/workflows/verify-on-macos.yml
@@ -13,7 +13,7 @@ jobs:
       uses: ./.
       with:
         key: ${{ secrets.SSH_KEY }}
-        known_hosts: ${{ secrets.KNOWN_HOSTS }} # optional
+        known_hosts: ${{ secrets.KNOWN_HOSTS }}
     - name: print created files
       run: ls -l ~/.ssh
     - name: git clone through SSH
@@ -28,7 +28,7 @@ jobs:
       uses: ./.
       with:
         key: ${{ secrets.SSH_KEY }}
-        known_hosts: ${{ secrets.KNOWN_HOSTS }} # optional
+        known_hosts: ${{ secrets.KNOWN_HOSTS }}
         name: ssh_key_name # optional
         config: | # optional
           Host github
diff --git a/.github/workflows/verify-on-ubuntu.yml b/.github/workflows/verify-on-ubuntu.yml
index e6548e1..8b165c5 100644
--- a/.github/workflows/verify-on-ubuntu.yml
+++ b/.github/workflows/verify-on-ubuntu.yml
@@ -13,7 +13,7 @@ jobs:
       uses: ./.
       with:
         key: ${{ secrets.SSH_KEY }}
-        known_hosts: ${{ secrets.KNOWN_HOSTS }} # optional
+        known_hosts: ${{ secrets.KNOWN_HOSTS }}
     - name: print created files
       run: ls -l ~/.ssh
     - name: git clone through SSH
@@ -28,7 +28,7 @@ jobs:
       uses: ./.
       with:
         key: ${{ secrets.SSH_KEY }}
-        known_hosts: ${{ secrets.KNOWN_HOSTS }} # optional
+        known_hosts: ${{ secrets.KNOWN_HOSTS }}
         name: ssh_key_name # optional
         config: | # optional
           Host github
diff --git a/.github/workflows/verify-on-ubuntu1604.yml b/.github/workflows/verify-on-ubuntu1604.yml
index b3cce08..fdd7d67 100644
--- a/.github/workflows/verify-on-ubuntu1604.yml
+++ b/.github/workflows/verify-on-ubuntu1604.yml
@@ -13,7 +13,7 @@ jobs:
       uses: ./.
       with:
         key: ${{ secrets.SSH_KEY }}
-        known_hosts: ${{ secrets.KNOWN_HOSTS }} # optional
+        known_hosts: ${{ secrets.KNOWN_HOSTS }}
     - name: print created files
       run: ls -l ~/.ssh
     - name: git clone through SSH
@@ -28,7 +28,7 @@ jobs:
       uses: ./.
       with:
         key: ${{ secrets.SSH_KEY }}
-        known_hosts: ${{ secrets.KNOWN_HOSTS }} # optional
+        known_hosts: ${{ secrets.KNOWN_HOSTS }}
         name: ssh_key_name # optional
         config: | # optional
           Host github
diff --git a/.github/workflows/verify-on-windows.yml b/.github/workflows/verify-on-windows.yml
index 003466f..6e58f05 100644
--- a/.github/workflows/verify-on-windows.yml
+++ b/.github/workflows/verify-on-windows.yml
@@ -13,7 +13,7 @@ jobs:
       uses: ./.
       with:
         key: ${{ secrets.SSH_KEY }}
-        known_hosts: ${{ secrets.KNOWN_HOSTS }} # optional
+        known_hosts: ${{ secrets.KNOWN_HOSTS }}
     - name: print created files
       run: ls ~/.ssh
     - name: git clone through SSH
@@ -28,7 +28,7 @@ jobs:
       uses: ./.
       with:
         key: ${{ secrets.SSH_KEY }}
-        known_hosts: ${{ secrets.KNOWN_HOSTS }} # optional
+        known_hosts: ${{ secrets.KNOWN_HOSTS }}
         name: ssh_key_name # optional
         config: | # optional
           Host github
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 55bebe3..79f9ea6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 * rename `private-key` to `key`
 * rename `known-hosts` to `known_hosts`
+* make `known_hosts` required
 
 ## [1.6.4] - 2020-01-27
 
diff --git a/README.md b/README.md
index ac298dc..acfb9d3 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@ steps:
   with:
     key: ${{ secrets.SSH_KEY }}
     name: id_rsa # optional
-    known_hosts: ${{ secrets.KNOWN_HOSTS }} # optional
+    known_hosts: ${{ secrets.KNOWN_HOSTS }}
     config: ${{ secrets.CONFIG }} # ssh_config; optional
 - name: rsync over ssh
   run: rsync ./foo/ user@remote:bar/
@@ -84,9 +84,7 @@ Check belows:
     * OPENSSH format (key begins with `-----BEGIN OPENSSH PRIVATE KEY-----`) may not work.
     * Use PEM format (begins with `-----BEGIN RSA PRIVATE KEY-----`).
 * `Host key verification failed.`:
-    * Set `known_hosts` option or use `ssh -o StrictHostKeyChecking=no`.
-    * The former is **HIGHLY** recommended for security reason.
-    * I'm planning to make `known_hosts` required in v2.
+    * Set `known_hosts` option correctly (use `ssh-keyscan` command).
 
 ### How do I use encrypted SSH key?
 
diff --git a/action.yml b/action.yml
index aef5b4e..bf35c34 100644
--- a/action.yml
+++ b/action.yml
@@ -15,7 +15,7 @@ inputs:
     default: "id_rsa"
   known_hosts:
     description: "public keys of SSH servers"
-    required: false
+    required: true
     default: ""
   config:
     description: "SSH config"
diff --git a/lib/main.js b/lib/main.js
index b97cccb..76eeb65 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -28,7 +28,9 @@ function main() {
             },
             {
                 name: "known_hosts",
-                contents: prependLf(core.getInput("known_hosts")),
+                contents: prependLf(core.getInput("known_hosts", {
+                    required: true,
+                })),
                 options: {
                     mode: 0o644,
                     flag: "a",
diff --git a/lib/main.js.map b/lib/main.js.map
index 43bb0e4..3fa68cc 100644
--- a/lib/main.js.map
+++ b/lib/main.js.map
@@ -1 +1 @@
-{"version":3,"file":"main.js","sourceRoot":"","sources":["../src/main.ts"],"names":[],"mappings":";;;;;;;;;AAAA,uCAAyB;AACzB,2CAA6B;AAE7B,oDAAsC;AAStC;;GAEG;AACH,SAAS,IAAI;IAEZ,IACA;QACC,MAAM,KAAK,GAAe;YACzB;gBACC,IAAI,EAAE,IAAI,CAAC,QAAQ,CAAC,MAAM,CAAC;gBAC3B,QAAQ,EAAE,IAAI,CAAC,QAAQ,CAAC,KAAK,EAAE;oBAC9B,QAAQ,EAAE,IAAI;iBACd,CAAC;gBACF,OAAO,EAAE;oBACR,IAAI,EAAE,KAAK;oBACX,IAAI,EAAE,IAAI;iBACV;aACD;YACD;gBACC,IAAI,EAAE,aAAa;gBACnB,QAAQ,EAAE,SAAS,CAAC,IAAI,CAAC,QAAQ,CAAC,aAAa,CAAC,CAAC;gBACjD,OAAO,EAAE;oBACR,IAAI,EAAE,KAAK;oBACX,IAAI,EAAE,GAAG;iBACT;aACD;YACD;gBACC,IAAI,EAAE,QAAQ;gBACd,QAAQ,EAAE,SAAS,CAAC,IAAI,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;gBAC5C,OAAO,EAAE;oBACR,IAAI,EAAE,KAAK;oBACX,IAAI,EAAE,GAAG;iBACT;aACD;SACD,CAAC;QAEF,0BAA0B;QAC1B,MAAM,IAAI,GAAG,gBAAgB,EAAE,CAAC;QAChC,MAAM,OAAO,GAAG,IAAI,CAAC,OAAO,CAAC,IAAI,EAAE,MAAM,CAAC,CAAC;QAC3C,EAAE,CAAC,SAAS,CAAC,OAAO,EAAE;YACrB,SAAS,EAAE,IAAI;YACf,IAAI,EAAE,KAAK;SACX,CAAC,CAAC;QAEH,eAAe;QACf,KAAI,MAAM,IAAI,IAAI,KAAK,EACvB;YACC,MAAM,QAAQ,GAAG,IAAI,CAAC,IAAI,CAAC,OAAO,EAAE,IAAI,CAAC,IAAI,CAAC,CAAC;YAC/C,EAAE,CAAC,aAAa,CAAC,QAAQ,EAAE,IAAI,CAAC,QAAQ,EAAE,IAAI,CAAC,OAAO,CAAC,CAAC;SACxD;QAED,OAAO,CAAC,GAAG,CAAC,8BAA8B,OAAO,gBAAgB,CAAC,CAAC;KACnE;IACD,OAAM,GAAG,EACT;QACC,IAAI,CAAC,SAAS,CAAC,GAAG,CAAC,OAAO,CAAC,CAAC;KAC5B;AACF,CAAC;AAED;;;GAGG;AACH,SAAS,gBAAgB;IAExB,MAAM,OAAO,GAAG,UAAU,EAAE,CAAC;IAC7B,MAAM,IAAI,GAAG,OAAO,CAAC,GAAG,CAAC,OAAO,CAAC,CAAC;IAClC,IAAG,IAAI,KAAK,SAAS,EACrB;QACC,MAAM,KAAK,CAAC,GAAG,OAAO,iBAAiB,CAAC,CAAC;KACzC;IAED,OAAO,IAAI,CAAC;AACb,CAAC;AAED;;;GAGG;AACH,SAAS,UAAU;IAElB,IAAG,OAAO,CAAC,QAAQ,KAAK,OAAO,EAC/B;QACC,UAAU;QACV,OAAO,aAAa,CAAC;KACrB;IAED,gBAAgB;IAChB,OAAO,MAAM,CAAC;AACf,CAAC;AAED;;;;GAIG;AACH,SAAS,SAAS,CAAC,KAAa;IAE/B,IAAG,KAAK,CAAC,MAAM,KAAK,CAAC,EACrB;QACC,sBAAsB;QACtB,OAAO,EAAE,CAAC;KACV;IAED,OAAO,KAAK,KAAK,EAAE,CAAC;AACrB,CAAC;AAED,IAAI,EAAE,CAAC"}
\ No newline at end of file
+{"version":3,"file":"main.js","sourceRoot":"","sources":["../src/main.ts"],"names":[],"mappings":";;;;;;;;;AAAA,uCAAyB;AACzB,2CAA6B;AAE7B,oDAAsC;AAStC;;GAEG;AACH,SAAS,IAAI;IAEZ,IACA;QACC,MAAM,KAAK,GAAe;YACzB;gBACC,IAAI,EAAE,IAAI,CAAC,QAAQ,CAAC,MAAM,CAAC;gBAC3B,QAAQ,EAAE,IAAI,CAAC,QAAQ,CAAC,KAAK,EAAE;oBAC9B,QAAQ,EAAE,IAAI;iBACd,CAAC;gBACF,OAAO,EAAE;oBACR,IAAI,EAAE,KAAK;oBACX,IAAI,EAAE,IAAI;iBACV;aACD;YACD;gBACC,IAAI,EAAE,aAAa;gBACnB,QAAQ,EAAE,SAAS,CAAC,IAAI,CAAC,QAAQ,CAAC,aAAa,EAAE;oBAChD,QAAQ,EAAE,IAAI;iBACd,CAAC,CAAC;gBACH,OAAO,EAAE;oBACR,IAAI,EAAE,KAAK;oBACX,IAAI,EAAE,GAAG;iBACT;aACD;YACD;gBACC,IAAI,EAAE,QAAQ;gBACd,QAAQ,EAAE,SAAS,CAAC,IAAI,CAAC,QAAQ,CAAC,QAAQ,CAAC,CAAC;gBAC5C,OAAO,EAAE;oBACR,IAAI,EAAE,KAAK;oBACX,IAAI,EAAE,GAAG;iBACT;aACD;SACD,CAAC;QAEF,0BAA0B;QAC1B,MAAM,IAAI,GAAG,gBAAgB,EAAE,CAAC;QAChC,MAAM,OAAO,GAAG,IAAI,CAAC,OAAO,CAAC,IAAI,EAAE,MAAM,CAAC,CAAC;QAC3C,EAAE,CAAC,SAAS,CAAC,OAAO,EAAE;YACrB,SAAS,EAAE,IAAI;YACf,IAAI,EAAE,KAAK;SACX,CAAC,CAAC;QAEH,eAAe;QACf,KAAI,MAAM,IAAI,IAAI,KAAK,EACvB;YACC,MAAM,QAAQ,GAAG,IAAI,CAAC,IAAI,CAAC,OAAO,EAAE,IAAI,CAAC,IAAI,CAAC,CAAC;YAC/C,EAAE,CAAC,aAAa,CAAC,QAAQ,EAAE,IAAI,CAAC,QAAQ,EAAE,IAAI,CAAC,OAAO,CAAC,CAAC;SACxD;QAED,OAAO,CAAC,GAAG,CAAC,8BAA8B,OAAO,gBAAgB,CAAC,CAAC;KACnE;IACD,OAAM,GAAG,EACT;QACC,IAAI,CAAC,SAAS,CAAC,GAAG,CAAC,OAAO,CAAC,CAAC;KAC5B;AACF,CAAC;AAED;;;GAGG;AACH,SAAS,gBAAgB;IAExB,MAAM,OAAO,GAAG,UAAU,EAAE,CAAC;IAC7B,MAAM,IAAI,GAAG,OAAO,CAAC,GAAG,CAAC,OAAO,CAAC,CAAC;IAClC,IAAG,IAAI,KAAK,SAAS,EACrB;QACC,MAAM,KAAK,CAAC,GAAG,OAAO,iBAAiB,CAAC,CAAC;KACzC;IAED,OAAO,IAAI,CAAC;AACb,CAAC;AAED;;;GAGG;AACH,SAAS,UAAU;IAElB,IAAG,OAAO,CAAC,QAAQ,KAAK,OAAO,EAC/B;QACC,UAAU;QACV,OAAO,aAAa,CAAC;KACrB;IAED,gBAAgB;IAChB,OAAO,MAAM,CAAC;AACf,CAAC;AAED;;;;GAIG;AACH,SAAS,SAAS,CAAC,KAAa;IAE/B,IAAG,KAAK,CAAC,MAAM,KAAK,CAAC,EACrB;QACC,sBAAsB;QACtB,OAAO,EAAE,CAAC;KACV;IAED,OAAO,KAAK,KAAK,EAAE,CAAC;AACrB,CAAC;AAED,IAAI,EAAE,CAAC"}
\ No newline at end of file
diff --git a/src/main.ts b/src/main.ts
index b3aa60c..7a191cb 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -30,7 +30,9 @@ function main(): void
 			},
 			{
 				name: "known_hosts",
-				contents: prependLf(core.getInput("known_hosts")),
+				contents: prependLf(core.getInput("known_hosts", {
+					required: true,
+				})),
 				options: {
 					mode: 0o644,
 					flag: "a",