Merge pull request #328 from biswajitdas-007/javascript

String methods added

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.

languages/python.py

@@ -1,86 +0,0 @@
-"""
-Python3 Programming Language Cheatsheet
-"""
-
-# Basics: ###
-
-# Variables -- Python uses variables to define things that are subject to change.
-# Operators -- There are several type of operators available in Python. 
-#              Arithmetic operators:
-#              +        ----------> Addition Operator
-#              -        ----------> Subtraction Operator
-#              *        ----------> Multiplication Operator
-#              /        ----------> Division Operator
-#              %        ----------> Modulus Operator
-#              **        ----------> Exponent Operator
-#              //        ----------> Floor division Operator
-
-#              Comparision Operators:
-#              ==        ----------> Equals
-#              !=        ----------> Not equal to
-#              >        ----------> Greater than
-#              <        ----------> Less than
-#              >=        ----------> Greater than or equal to
-#              <=       ----------> Less than or equal to
-
-#              Assignment Operators:
-#              =        ----------> Assigns value
-#              +=        ----------> Shorthand for addition to itself
-#              -=        ----------> Shorthand for subtraction to itself
-#              *=        ----------> Shorthand for multiplication to itself
-#              /=        ----------> Shorthand for division to itself
-#              %=        ----------> Shorthand for modulus of itself
-#              **=        ----------> Shorthand for exponent of itself
-#              //=        ----------> Shorthand for floor division to itself
-
-#              Bitwise Operators:
-#              &        ----------> Binary AND
-#              |        ----------> Binary OR
-#              ^        ----------> Binary XOR
-#              ~        ----------> Binary NOT
-#              <<        ----------> Binary left shift
-#              >>        ----------> Binary Right Shift
-
-
-# Strings -- Strings in python are denoted by either '' or "". Some list operations are:
-# ex: a = "Manoj"
-# a[0]                 =>'M'
-# a[1]                 => 'a'
-# a[1:]                => Will print rest of characters from 1 to other
-# a[:3]                => Will print 0 to 2nd position
-# a[:]                 => Will print whole string
-# a[:-1]               => Grab everything but the last letter
-# a[::2]               => Grab everything but go in step sizes of 2
-# a[::-1]              => We can use this to print a string backwards
-
-##### Strings have a property named immutability. It means once a string is created, the elements within it cann't be changed or replaced.
-##### We can use multiplication symbol to create repetition. ex: letter = 'z', letter*10 will print 'zzzzzzzzzz'.
-##### Similarly there are many methods that are applicable on strings:
-# ex: a = 'Hello'
-# a.upper()            => converts string into upper case ==> 'HELLO'
-# a.lower()            => converts string into lower case ==> 'hello'
-# a.title()            => title case a string ==> 'Hello'
-# a.rstrip()           => Right trim white spaces
-# a.lstrip()           => Left trim white spaces
-# a.strip()            => completely trim the white spaces
-# a.split()            => split a string by blank spaces
-# a.split("value")     => split the string after some specific value
-# a.isalnum()          => True if string consists of only alphanum characters (No symbols).
-# a.isalpha()          => True if string consists of only alphabetic characters (No symbols).
-# a.islower()          => True if string's alphabetic characters are all lower case.
-# a.isnumeric()        => True if string consists of only numeric characters.
-# a.isspace()          => True if string consists of only whitespace characters.
-# a.istitle()          => True if string is in title case
-# a.isupper()          => True if string's alphabetic characters are all upper case.
-
-##### Some other useful string methods or functions that are available in python are:
-# .replace("first_string", "second_string") => first_string will be replaced by second_string
-# .startswith("") => search for a particular character in the starting of a string
-# .endswith("") => search for a particular character in the end of a string
-# .capitalize() => capitalize the first word of the string
-# .swapcase() => swap the case of caharacter in a string
-
-
-# Lists -- [a1, a2, "Some String", [b1, "some other string"]], This is an example of the list.
-# There are several List Operations like
-# a = 

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