Fix trailing whitespace on all files

Tidy files; tidy soul!

sheets/MegaCli

@@ -1,5 +1,5 @@
 # MegaCli introduced by LSI as a command line administration of LSI MegaRaid controllers.
-# With megacli we can create physical raids, gather info about raids and monitor raids. 
+# With megacli we can create physical raids, gather info about raids and monitor raids.
 
 # Install MegaCLI
 yum install MegaCli # CentOS

sheets/_cpp/hello

@@ -7,7 +7,7 @@
 
 // To Compile w/ specific executable name: g++ my_script.cpp -o my.executable
 // To Execute: ./my.executable
-int main() { 
+int main() {
     std::cout << "Hello" << endl;
     return 0;
 }

sheets/_elm/hello

@@ -7,7 +7,7 @@
 #	elm package install elm-lang/html
 # after that create Hello.elm in this directory
 # To start:
-#	elm reactor        
+#	elm reactor
 # Read more here:
 #   https://www.elm-tutorial.org/en/01-foundations/01-hello.html
 module Hello exposing (..)

sheets/_go/Axioms

@@ -21,6 +21,6 @@ c <- 1
 c <- 2
 close(c)
 for i := 0; i < 3; i++ {
-    fmt.Printf("%d ", <-c) 
+    fmt.Printf("%d ", <-c)
 }
 // 1 2 0

sheets/_go/Channels

@@ -3,7 +3,7 @@ ch <- 42             // Send a value to the channel ch.
 v := <-ch            // Receive a value from ch
 
 // Create a buffered channel.
-// Writing to a buffered channels does not block 
+// Writing to a buffered channels does not block
 // if less than <buffer size> unread values have been written.
 ch := make(chan int, 100)
 // Non-buffered channels block.

sheets/_go/Pointers

@@ -4,4 +4,4 @@ r := &Vertex{1, 2} // r is also a pointer to a Vertex
 
 // The type of a pointer to a Vertex is *Vertex
 // new creates a pointer to a new struct instance
-var s *Vertex = new(Vertex) 
+var s *Vertex = new(Vertex)

sheets/_go/func

@@ -68,7 +68,7 @@ func outer() (func() int, int) {
 func main() {
 	fmt.Println(adder(1, 2, 3)) 	// 6
 	fmt.Println(adder(9, 9))	// 18
-	
+
 	nums := []int{10, 20, 30}
 	fmt.Println(adder(nums...))	// 60
 }

sheets/_go/go

@@ -1,4 +1,4 @@
-// Goroutines are lightweight threads (managed by Go, not OS threads). 
+// Goroutines are lightweight threads (managed by Go, not OS threads).
 // `go f(a, b)` starts a new goroutine which runs `f` (given `f` is a function).
 //
 // just a function (which can be later started as a goroutine)

sheets/_go/switch

@@ -10,7 +10,7 @@ default:
     fmt.Println("Other")
 }
 
-// as with for and if, you can have an assignment statement before the switch value 
+// as with for and if, you can have an assignment statement before the switch value
 switch os := runtime.GOOS; os {
 case "darwin": ...
 }

sheets/_js/1line

@@ -8,7 +8,7 @@ var newA = myArray.slice(0);
 '<b>A</b>'.replace(/<[^>]+>/gi, '');
 
 // Reverse a string
-var str = "abc def ghi."; 
+var str = "abc def ghi.";
 str.split('').reverse().join('');   // '.ihg fed cba'
 
 // Reverse order of words in a string

sheets/_mathematica/levelspec

@@ -14,8 +14,8 @@ Map[f,l,{2,5}]
 (* The default levelspec is {1} *)
 Map[f,l]===Map[f,l,{1}]
 
-(* 
+(*
 A positive level n consists of all parts of expr specified by n indices.
 A negative level -n consists of all parts of expr with depth n.
 Level 0 corresponds to the whole expression.
-*)
+*)

sheets/_perl/subroutines

@@ -28,7 +28,7 @@ named_params_example({
 sub named_params_with_defaults {
    my ( $arg ) = @_;
    # Use my ( $self, $arg ) = @_; if you are in object land.
-   # 
+   #
    # Set defaults
    #         If option given      Use options   Else
    my $one = exists $arg->{one} ? $arg->{one} : "default1";

sheets/_perl6/hello

@@ -1,4 +1,4 @@
-# to install: 
+# to install:
 #             (Debian/Ubuntu) apt-get install rakudo
 #             (Fedora/CentOS) yum install perl6 (or rakudo)
 # to execute: perl6 my_script.pl

sheets/_psql/tables

@@ -22,7 +22,7 @@ ALTER TABLE table_name ALTER COLUMN [SET DEFAULT value | DROP DEFAULT]
 ALTER TABLE table_name ADD PRIMARY KEY (column,...);
 
 -- Remove the primary key from a table
-ALTER TABLE table_name 
+ALTER TABLE table_name
 DROP CONSTRAINT primary_key_constraint_name;
 
 -- Rename a table

sheets/_python3/classes

@@ -3,13 +3,13 @@
 class Dog:
     # __init__ is the constructor, run on instantiation
     # The 'self' parameter refers to the calling instance of the class.
-    # It's automatically provided to methods called on an instance of this 
+    # It's automatically provided to methods called on an instance of this
     # class. It can be named anything, but 'self' is the convention.
     def __init__(self, name):
         self.name = name
 
     # Class methods (or static methods) are created by adding the staticmethod
-    # decorator. The 'self' parameter is not passed to these methods. 
+    # decorator. The 'self' parameter is not passed to these methods.
     @staticmethod
     def unrelated_class_method():
         print('this is not an instance method')

sheets/_rust/threads

@@ -6,7 +6,7 @@ fn main() {
     let t = thread::spawn(|| {
         println!("In a new thread!");
     });
-    
+
     // Wait for execution of spawned thread to join back up with main thread
     let result = t.join();
 

sheets/_scala/DataStructures

@@ -5,7 +5,7 @@
 // This example would be a Tuple3
 (1,2,3)
 
-// tuple sugar 
+// tuple sugar
 // This example would be a Tuple2
 (1 -> 2) //same as
 (1, 2)

sheets/_scala/ObjectOrientation

@@ -23,7 +23,7 @@ class C(var x: R) {
   //
   // alternative constructor
   def this = this(42)
-}   
+}
 
 // anonymous class
 new{ ... }

sheets/_scala/Variables

@@ -9,7 +9,7 @@ val x = 5
 // BAD
 x = 5
 
-// lazy value 
+// lazy value
 // immutable, evaluated once but only when called
 lazy val x = 5
 

sheets/az

@@ -5,7 +5,7 @@
 curl -L https://aka.ms/InstallAzureCli | bash
 
 # create a resource group named "MyResourceGroup" in the westus2 region of Azure
-az group create -n MyResourceGroup -l westus2 
+az group create -n MyResourceGroup -l westus2
 
 # create a Linux VM using the UbuntuTLS image, with two attached storage disks of 10 GB and 20 GB
 az vm create -n MyLinuxVM -g MyResourceGroup --ssh-key-value $HOME/.ssh/id_rsa.pub --image UbuntuLTS --data-disk-sizes-gb 10 20

sheets/bonnie

@@ -1,4 +1,4 @@
-# Bonnie++ 
+# Bonnie++
 # disk and file system benchmarking tool for measuring I/O performance
 
 # benchmark disk mounted at /tmp/; use `user` for that

sheets/btrfs

@@ -1,7 +1,7 @@
 # Create a btrfs file system on /dev/sdb, /dev/sdc, and /dev/sdd
 mkfs.btrfs /dev/sdb /dev/sdc /dev/sdd
 
-# btrfs with just one hard drive, metadata not redundant 
+# btrfs with just one hard drive, metadata not redundant
 # (this is danegerous: if your metadata is lost, your data is lost as well)
 mkfs.btrfs -m single /dev/sdb
 

sheets/bzr

@@ -2,7 +2,7 @@
 cd ~/.bazaar/plugins
 bzr branch lp:bzr-fastimport fastimport
 # you can do it manually:
-# pip install 
+# pip install
 # python setup.py build_ext -i
 # mv ... ~/.bazaar/plugins
 # probably you will need this patch:

sheets/curl

@@ -14,7 +14,7 @@ curl http://example.com/pic[1-24].jpg
 curl -L http://example.com/file
 
 # Download a file and pass HTTP Authentication
-curl -u username:password URL 
+curl -u username:password URL
 
 # Download a file with a Proxy
 curl -x proxysever.server.com:PORT http://addressiwantto.access

sheets/dcfldd

@@ -1,4 +1,4 @@
-# enhanced version of GNU dd with features useful for forensics and security. 
+# enhanced version of GNU dd with features useful for forensics and security.
 # includes ability to have mulitple output targets
 
 # write file image to an SD card showing a progress bar based on filesize

sheets/identify

@@ -1,4 +1,4 @@
-# identify 
+# identify
 #
 # describes the format and characteristics of one or more image files
 

sheets/ioreg

@@ -1,4 +1,4 @@
-# ioreg 
+# ioreg
 # show I/O Kit registry (Mac OS X)
 
 # find out the arch of the efi firmware in a Mac

sheets/jq

@@ -58,7 +58,7 @@ jq 'flatten(1)'
 
 # Converting to csv
 jq '.[] | [.foo, .bar] | @csv' -r
-# 
+#
 # [{ "foo": 1, "bar": 2, "baz":3 }]
 # => 1,2
 

sheets/jslint

@@ -1,5 +1,5 @@
 # jslint
-# 
+#
 # The JavaScript Code Quality Tool written by Dougls Crockford
 
 # to install jslint

sheets/julia

@@ -1,4 +1,4 @@
-# Julia 
+# Julia
 # high-level dynamic programming language designed to address the needs of high-performance numerical analysis
 # and computational science while also being effective for general-purpose programming
 

sheets/launchctl

@@ -9,11 +9,11 @@
 # whenever the user logs in:
 launchctl load ~/Library/LaunchAgents/my_script.plist
 
-# Activate an agent which requires root privileges to run 
+# Activate an agent which requires root privileges to run
 # and/or should be loaded whenever any user logs in (note the absence of ~ in the path):
 sudo launchctl load /Library/LaunchAgents/root_script.plist
 
-# Activate a system-wide daemon to be loaded 
+# Activate a system-wide daemon to be loaded
 # whenever the system boots up (even if no user logs in):
 sudo launchctl load /Library/LaunchDaemons/system_daemon.plist
 

sheets/libreoffice

@@ -4,6 +4,6 @@ libreoffice --headless --convert-to pdf *.pptx
 # Save them to a different directory?
 libreoffice --headless --convert-to pdf *.docx --outdir ~/docs/
 
-# Convert files nested inside folders? 
+# Convert files nested inside folders?
 # This uses sharkdp/fd, you could use GNU find, xargs etc.
 fd -e doc -e docx -x libreoffice --headless --convert-to pdf --outdir {//} {}

sheets/ncmpcpp

@@ -1,6 +1,6 @@
 # ncmpcpp is an mpd client (compatible with mopidy) with a UI very similar to ncmpc,
 # but it provides new useful features such as support for regular expressions for library searches,
-# extended song format, items filtering, the ability to sort playlists, and a local filesystem browser. 
+# extended song format, items filtering, the ability to sort playlists, and a local filesystem browser.
 
 # configure ncmpcpp
 mkdir ~/.ncmpcpp

sheets/objdump

@@ -1,4 +1,4 @@
-# objdump 
+# objdump
 # program for displaying various information about object files
 
 # Display the contents of the overall file header

sheets/percol

@@ -1,6 +1,6 @@
 # percol
 #
-# adds flavor of interactive filtering to the traditional pipe concept of UNIX shell 
+# adds flavor of interactive filtering to the traditional pipe concept of UNIX shell
 
 # to install percol
 sudo pip install percol

sheets/perl6

@@ -2,7 +2,7 @@
 # The Perl 6 Language Implementation
 
 # to install perl6 (in Debian/Ubuntu)
-apt-get install rakudo 
+apt-get install rakudo
 
 # To install rakudobrew and zef (perl 6 package management)
 git clone https://github.com/tadzik/rakudobrew ~/.rakudobrew

sheets/php

@@ -1,4 +1,4 @@
-# PHP is a server-side scripting language designed primarily for web development 
+# PHP is a server-side scripting language designed primarily for web development
 # but also used as a general-purpose programming language
 
 # To view the php version:

sheets/rclone

@@ -11,7 +11,7 @@ rclone ls remote:path
 rclone copy /local/path remote:path
 
 # Sync /local/path to the remote
-rclone sync /local/path remote:path 
+rclone sync /local/path remote:path
 
 # Server side Copy
 rclone copy s3:oldbucket s3:newbucket

sheets/rustup

@@ -1,5 +1,5 @@
 # rustup
-# The Rust toolchain installer 
+# The Rust toolchain installer
 
 # update rustup toolchain
 rustup update

sheets/sox

@@ -30,7 +30,7 @@ sox ${mono_wav} -c 2 ${stereo_wav}
 # Generate Different Types of Sounds
 # ${len} - length of audio to synthesize, hh:mm:ss.frac
 # ${freq} - frequencies at the beginning/end of synthesis in Hz
-# ${type} is one of sine, square, triangle, sawtooth, trapezium, exp, 
+# ${type} is one of sine, square, triangle, sawtooth, trapezium, exp,
 #   [white]noise, pinknoise, brown-noise
 # sox -n synth ${len} ${type} ${freq}
 sox -r 8000 -n output.wav synth 3 sine 300-3300

sheets/systemd-sysvinit

@@ -1,7 +1,7 @@
 # SysVinit to Systemd Cheatsheet
 # Services
 #-------------------------------------------------------------------------------------------------------------------------------------------------
-# Sysvinit Command              Systemd Command                 Notes 
+# Sysvinit Command              Systemd Command                 Notes
 #-------------------------------------------------------------------------------------------------------------------------------------------------
 # service frobozz start         systemctl start frobozz         Used to start a service (not reboot persistent)
 # service frobozz stop          systemctl stop frobozz          Used to stop a service (not reboot persistent)
@@ -10,19 +10,19 @@
 # service frobozz condrestart   systemctl condrestart frobozz   Restarts if the service is already running.
 # service frobozz status        systemctl status frobozz        Tells whether a service is currently running.
 # ls /etc/rc.d/init.d/          systemctl                       Used to list the services that can be started or stopped
-#                               (or) systemctl list-unit-files --type=service 
+#                               (or) systemctl list-unit-files --type=service
 #                               (or) ls /lib/systemd/system/*.service /etc/systemd/system/*.service
 # chkconfig frobozz on          systemctl enable frobozz        Turn the service on, for start at next boot, or other trigger.
 # chkconfig frobozz off         systemctl disable frobozz       Turn the service off for the next reboot, or any other trigger.
 # chkconfig frobozz             systemctl is-enabled frobozz    Used to check whether a service is configured to start or not in the current environment.
-# chkconfig --list              systemctl list-unit-files --type=service 
+# chkconfig --list              systemctl list-unit-files --type=service
-#                               (or) ls /etc/systemd/system/*.wants/   
+#                               (or) ls /etc/systemd/system/*.wants/
 #                                                               Print a table of services that lists which runlevels each is configured on or off
-# chkconfig --list | grep 5:on  systemctl list-dependencies graphical.target    
+# chkconfig --list | grep 5:on  systemctl list-dependencies graphical.target
 #                                                               Print a table of services that will be started when booting into graphical mode
-# chkconfig frobozz --list      ls /etc/systemd/system/*.wants/frobozz.service  
+# chkconfig frobozz --list      ls /etc/systemd/system/*.wants/frobozz.service
 #                                                               Used to list what levels this service is configured on or off
-# chkconfig frobozz --add       systemctl daemon-reload         Used when you create a new service file or modify any configuration 
+# chkconfig frobozz --add       systemctl daemon-reload         Used when you create a new service file or modify any configuration
 
 # SysVinit to Systemd Cheatsheet
 # Runlevels/targets
@@ -37,9 +37,9 @@
 #                               runlevel4.target
 #                               multi-user.target
 # 3                             runlevel3.target                Multi-user, non-graphical. Users can usually login via multiple consoles or via the network.
-#                               multi-user.target               
+#                               multi-user.target
 # 5                             runlevel5.target                Multi-user, graphical. Usually has all the services of runlevel 3 plus a graphical login.
 #                               graphical.target
 # 6                             runlevel6.target                Reboot
 #                               reboot.target
-# emergency                     emergency.target                Emergency shell 
+# emergency                     emergency.target                Emergency shell

sheets/xfs_repair

@@ -1,5 +1,5 @@
 # xfs_repair
-# repair an XFS filesystem 
+# repair an XFS filesystem
 
 # rapair a XFS filesystem
 xfs_repair /dev/dm-0

sheets/xkb

@@ -1,4 +1,4 @@
-# Set the keyboard layout for the current X session 
+# Set the keyboard layout for the current X session
 setxkbmap -layout "us,ru"
 setxkbmap -option "grp:caps_toggle,grp_led:scroll,compose:ralt"
 

sheets/xset

@@ -1,5 +1,5 @@
 # xset
-# user preference utility for X 
+# user preference utility for X
 
 # Disable screen saver blanking
 xset s off
@@ -19,5 +19,5 @@ xset dpms force off
 # Standby screen
 xset dpms force standby
 
-# Suspend screen 
+# Suspend screen
 xset dpms force suspend