merge

Author: xtutran

git/README.md

@@ -38,3 +38,30 @@ echo "**/.DS_Store" >> ~/.gitignore_global
 echo "**/._.DS_Store" >> ~/.gitignore_global
 git config --global core.excludesfile ~/.gitignore_global
 ```
+## Permanently delete sentive file/folder which be uploaded accidently, [ref](https://help.github.com/articles/removing-sensitive-data-from-a-repository/)
+ 
+ - Force delete file
+ ```bash
+ git filter-branch --force --index-filter \
+ 'git rm --cached --ignore-unmatch YOUR_FILE' \
+ --prune-empty --tag-name-filter cat -- --all
+ ```
+ 
+ - Force delete folder
+ ```bash
+ git filter-branch --force --index-filter \
+ 'git rm -r --cached --ignore-unmatch YOUR_FOLDER' \
+ --prune-empty --tag-name-filter cat -- --all
+ ```
+ 
+ - Force push to overwrite your repo
+ ```bash
+ git push origin --force --all
+ ```
+ 
+ - Undo delete
+ ```bash
+ git reset --hard refs/original/refs/heads/master
+ ```
+ 
+ - Tell your collaborators to rebase, not merge

misc/README.md

@@ -5,6 +5,9 @@ curl -O <link to download>
 
 # with proxy
 curl -O --proxy <[protocol://][user:password@]proxyhost[:port]> <link to download>
+
+# if your password contain special character like '@'
+curl -O http://proxy_server:proxy_port --proxy-user username:password <link to download>
 ```
 
 ## Pip install with proxy

ssh/README.md

@@ -3,7 +3,7 @@
 Example: SSH password-less automatic login from localhost to Cloudera-VM  with user cloudera.
 ```
 SSH Client : localhost ( MacOS  )
-SSH Remote Host : 127.0.0.1 ( RedHat - cloudera-vm )
+SSH Remote Host : 127.0.0.1 ( RedHat - cloudera-vm ) forward port 22 to 3022 in Client
 ```
 
 ### 2. Create Authentication SSH-Kegen Keys on Client machine
@@ -13,25 +13,24 @@ ssh-keygen -t rsa
 
 ### 3. Create .ssh Directory on Remote machine
 ```bash
-ssh cloudera@127.0.0.1 mkdir -p .ssh
+ssh -p 3022 cloudera@127.0.0.1 mkdir -p .ssh
 ```
 
 ### 4. Upload Generated Public Keys from Client to Remote machine 
 ```bash
-cat .ssh/id_rsa.pub | ssh cloudera@127.0.0.1 'cat >> .ssh/authorized_keys'
+cat ~/.ssh/id_rsa.pub | ssh -p 3022 cloudera@127.0.0.1 'cat >> ~/.ssh/authorized_keys'
 ```
 
 ### 5. Set Permissions on Remote machine
 ```bash
-ssh cloudera@127.0.0.1 "chmod 700 .ssh; chmod 640 .ssh/authorized_keys"
+ssh -p 3022 cloudera@127.0.0.1 "chmod 700 .ssh; chmod 640 ~/.ssh/authorized_keys"
 ```
 
 ### 5. Make an alias for Remote server
 ```bash
 vi ~/.ssh/config
 ```
 
- * 3022 is forwarding port of 22 from VM to my local machine
 ```
 Host cloudera-vm
     HostName 127.0.0.1