Merge pull request #328 from biswajitdas-007/javascript

String methods added

backend/django.py

@@ -89,8 +89,7 @@ django-admin help                        # display usage information and a list
 django-admin makemigrations              # create new migrations to the database based on the changes detected in the models
 django-admin migrate                     # synchronize the database state with your current state project models and migrations
 django-admin remove_stale_contenttypes   # Deletes stale content types (from deleted models) in your database.y.
-python manage.py runserver               # start the development webserver at 127.0.0.1 with the port <port> default 8000
-python manage.py runserver 0.0.0.0:<port># start the development webserver at device ip with the port and accessible in local network
+django-admin runserver <port>            # start the development webserver at 127.0.0.1 with the port <port> default 8000
 django-admin sendtestemail               # Sends a test email to the email addresses specified as arguments.
 django-admin shell                       # Runs a Python interactive interpreter. Tries to use IPython or bpython, if one of them is available. Any standard input is executed as code.
 django-admin showmigrations              # Shows all available migrations for the current project.

languages/javascript.js

@@ -95,3 +95,9 @@ arr.reduce(callback[, initialValue])                 // Apply a function against
 arr.reduceRight(callback[, initialValue])            // Apply a function against an accumulator and each value of the array (from right-to-left) as to reduce it to a single value.
 arr.some(callback[, initialValue])                   // Returns true if at least one element in this array satisfies the provided testing function.
 arr.values()                                         // Returns a new Array Iterator object that contains the values for each index in the array.
+
+// String methods
+String.charAt(index)                                 // Returns the character at the specified index in a string.
+String.indexOf(character)                            // Returns the index of the first occurrence of a specified value in a string.
+String.substring(starting_index, ending_index)       // Returns a new string that is a subset of the original string.
+String.substring(starting_index)                     // Returns a substring from starting index to last index of string.

tools/ubuntu.sh

@@ -21,6 +21,7 @@ cat /proc/<process_id>/maps   # Show the current virtual memory usage of a Linux
 ip r # Display ip of the server
 
 lsof -i :9000 # List process running on port 9000
+kill -9 $(lsof -t -i:PORT) # Kill the process running on whichever port specified
 
 journalctl -u minio.service -n 100 --no-pager # List last 100 logs for specific service