diff --git a/doc/ssh.md b/doc/ssh.md
index d99facd..d1e95b6 100644
--- a/doc/ssh.md
+++ b/doc/ssh.md
@@ -1,6 +1,4 @@
 `/etc/ssh/sshd_config`
-* Adding public key to remote machine :\
-     * ```ssh remotehost "umask 077; cat > .ssh/authorized_keys" < .ssh/id_rsa_backup.pub```
      
 
 * Access for VPS:
diff --git a/doc/tips.md b/doc/tips.md
index e9643a4..08c4491 100644
--- a/doc/tips.md
+++ b/doc/tips.md
@@ -1,33 +1,9 @@
 
 ## Tips
 
-
-1. ```bash
-   echo $RANDOM  # Return random 0-32767
-   ```
-   
-2. ```bash
-   \command  #  without using alias
-   ```
-
-3. ```bash
-   mount /dev/sda2 /home
-   ```
-   
-4. ```bash
-   mount /dev/sdb_ /mnt/Files  # Other disk 
-   ln -s /mnt/Files $HOME  # symlink in Home
-   ```
-   
 4. ```bash
    sudo pkill -9 -t pts/1  # close session
    ```
-    
-5. ```bash
-   [space]command  # without saving in history
-   sudo !!  # last command with sudo 
-   ```
-
 
 ### Autostart
 * create ```/etc/systemd/system/service.service```
diff --git a/doc/vim.md b/doc/vim.md
deleted file mode 100644
index cadea61..0000000
--- a/doc/vim.md
+++ /dev/null
@@ -1,7 +0,0 @@
-
-## commentary.vim
-```gcc``` - comment string
-```v``` + ```gc``` - comment selected block
-
-## surround.vim
-https://github.com/tpope/vim-surround