moar updates to the notes

Author: gbowne1

Apache/configure-apache2.md

@@ -1,6 +1,5 @@
 # Configuring Apache2
 
-
 ## Virtual Hosts
 
 An Apache2 virtual host is a powerful feature that allows you to host multiple websites (or applications) on a single server using a single Apache2 instance. It essentially tricks your server into thinking it's serving content from multiple machines, even though it's all on the same physical hardware.

IRC.md

@@ -53,4 +53,4 @@ replace #channel with the channel you want to set the option
 /version
 /help [command]
 /dcc send nickname filename
-/dcc get nickname filename
+/dcc get nickname filename

Node_JavaScript_Programming/javascript-programming.md

@@ -732,4 +732,4 @@ The scope of a JavaScript identifier refers to the region of the code where the
 
 - Global scope: Identifiers declared outside of any function or block have global scope and are accessible throughout the code.
 - Local scope: Identifiers declared within a function or block have local scope and are only accessible within that function or block.
-- Block scope: Identifiers declared with let and const have block scope, meaning they are only accessible within the block where they are defined
+- Block scope: Identifiers declared with let and const have block scope, meaning they are only accessible within the block where they are defined

Node_JavaScript_Programming/make-a-package-json-file.md

@@ -112,4 +112,4 @@ In a package.json file, the:
 
 ## Some other notes
 
-"eslintConfig" must be in JSON
+"eslintConfig" must be in JSON.

Node_JavaScript_Programming/using-npm.md

@@ -0,0 +1,4 @@
+`npm outdated`
+`npm list`
+`npm ls`
+`npm update`

PHP/php-development.md

@@ -7,3 +7,177 @@ I don't know a great deal about PHP development nor have I used a lot of PHP in
 <?php
 
 ?>
+
+## PHP keywords
+
+### Control Structures
+
+    abstract
+    and
+    array
+    as
+    break
+    callable
+    case
+    catch
+    class
+    clone
+    const
+    continue
+    declare
+    default
+    die
+    do
+    echo
+    else
+    elseif
+    empty
+    endfor
+    endforeach
+    endwhile
+    enum
+    eval
+    exit
+    extends
+    final
+    finally
+    for
+    foreach
+    function
+    global
+    goto
+    if
+    implements
+    import
+    instanceof
+    insteadof
+    interface
+    isset
+    list
+    namespace
+    new
+    or
+    print
+    private
+    protected
+    public
+    require
+    return
+    static
+    switch
+    throw
+    trait
+    try
+    unset
+    use
+    var
+    while
+    xor
+
+### Error Handling
+
+    @
+    error_reporting
+    set_error_handler
+    restore_error_handler
+    set_exception_handler
+    restore_exception_handler
+    register_shutdown_function
+
+### Language Constructs
+
+    __construct
+    __destruct
+    __get
+    __set
+    __isset
+    __unset
+    __call
+    __toString
+    __invoke
+    __set_state
+    __clone
+    __sleep
+    __wakeup
+    __serialize
+    __unserialize
+    __debugInfo
+    __tostring
+    __invoke
+    __isset
+    __unset
+    __call
+    __get
+    __set
+    __toString
+    __set_state
+    __clone
+    __sleep
+    __wakeup
+    __serialize
+    __unserialize
+    __debugInfo
+
+### Other Keywords
+
+ Other Keywords
+
+    abstract
+    and
+    array
+    as
+    break
+    callable
+    case
+    catch
+    class
+    clone
+    const
+    continue
+    declare
+    default
+    die
+    do
+    echo
+    else
+    elseif
+    empty
+    endwhile
+    enum
+    eval
+    exit
+    extends
+    final
+    finally
+    for
+    foreach
+    function
+    global
+    goto
+    if
+    implements
+    import
+    instanceof
+    insteadof
+    interface
+    isset
+    list
+    namespace
+    new
+    or
+    print
+    private
+    protected
+    public
+    require
+    return
+    static
+    switch
+    throw
+    trait
+    try
+    unset
+    use
+    var
+    while
+    xor

React_Development/commonpackages.md

@@ -30,14 +30,14 @@ This is a list of packages commonly installed in NodeJs and React projects
 "@hapi/boom": "^10.0.1", HTTP-friendly error objects
 "@hookform/resolvers": "^3.3.1",
 "@mui/base": "^5.0.0-alpha.110",
-"@mui/icons-material": "^5.11.0",
+"@mui/icons-material": "^5.11.0", Material UI icons package
 "@mui/icons-material": "^5.11.16",
 "@mui/icons-material": "^5.14.3",
 "@mui/icons-material": "^5.14.9",
 "@mui/icons-material": "^5.15.13",
 "@mui/icons-material": "^5.15.15",
 "@mui/lab": "^5.0.0-alpha.145",
-"@mui/material": "^5.11.0",
+"@mui/material": "^5.11.0", \   asdfasdfasdfasdfasdfasdf
 "@mui/material": "^5.12.3",
 "@mui/material": "^5.13.0",
 "@mui/material": "^5.13.5",
@@ -212,7 +212,7 @@ This is a list of packages commonly installed in NodeJs and React projects
 "supertest": "^6.3.4", SuperAgent driven library for testing HTTP servers
 "sweetalert2": "^11.7.28", A beautiful, responsive, customizable and accessible (WAI-ARIA) replacement for .js popup boxes, supported fork of sweetalert
 "tmi.js": "^1.8.4",
-"typescript": "4.9.4": Self explanatory.  
+"typescript": "4.9.4": Self explanatory.
 "uuid": "^9.0.0", RFC4122 (v1, v4, and v5) UUIDs
 "web-vitals": "^2.1.4" Easily measure performance metrics in JavaScript
 "web-vitals": "^3.3.1"

about-serviceworkers.md

@@ -45,4 +45,4 @@ Common Challenges:
 
     Lifecycle Management: Understanding the lifecycle of service workers, including installation, activation, and updates, is crucial for effective usage
 
-In summary, service workers have various use cases, contribute to improved website performance by enabling offline access and reducing loading times, and come with challenges such as the HTTPS requirement, complexity, and lifecycle management.
+In summary, service workers have various use cases, contribute to improved website performance by enabling offline access and reducing loading times, and come with challenges such as the HTTPS requirement, complexity, and lifecycle management.

bash-shell-stuff.md

@@ -15,3 +15,5 @@ Make the script executable: Use the `chmod +x` command to make the script execut
 Run the script: You can run the script by using the ./ notation followed by the script name. For example, you can use the command `./scriptname.sh` to run the script called scriptname.sh.
 
 These are the basic steps to create a bash shell script. You can then add more advanced features and functionality as needed.
+
+// TODO  ulimit -a shows system limits

dotnet/using-dotnet.md

@@ -0,0 +1,2 @@
+# Using .NET
+

using-apt.md

@@ -0,0 +1,5 @@
+# using apt
+
+`apt list --upgradable`
+`apt update`
+`apt upgrade`

using-gnu-ld-linker.md

@@ -1,24 +1,44 @@
 # Using GNU linker ld
 
+## ld flags
 
-ld -d   `ld: no input files`
-ld -g   `ld: no input files`
+My tests were done with doing these flags individually on a single command line.  ld usually exists at /usr/bin/ld.  My ld is GNU ld (GNU Binutils for Debian) 2.31.1.
+
+### Lowercase flags
+
+ld -d   `ld: no input files` used to enable dynamic linking of libraries. tells the linker to generate dynamic rather than static object files
+ld -g   `ld: no input files` used to generate debugging information in the output file.
 ld -i   `ld: no input files`
-ld -m   `ld: missing argument to -m`
+ld -m   `ld: missing argument to -m`  used to specify the output format. The argument to -m is the name of the output format, such as elf's
 ld -n   `ld: no input files`
 ld -q   `ld: no input files`
-ld -r   `ld: no input files`
+ld -r   `ld: no input files` used to generate a relocatable output file.
 ld -s   `ld: no input files`
-ld -t   `ld: no input files`
+ld -t   `ld: no input files` used to generate debugging information in the output file.
 ld -v   reports the version
 ld -x   `ld: no input files`
 
+### Uppercase flags
+
 ld -E   `ld: no input files`
 ld -G   `ld: no input files`
-ld -M   `ld: no input files`
+ld -M   `ld: no input files` used to generate a map file that shows how the linker mapped input sections to output section
 ld -N   `ld: no input files`
 ld -Q   `ld: no input files`
 ld -S   `ld: no input files`
 ld -U   `ld: no input files`
 ld -V   returns the version plus supported emulations
-ld -X   `ld: no input files`
+ld -X   `ld: no input files`
+
+## untested flags
+
+ld -T       used to specifiy the linker file used
+ld -o       Specifies the name of the output file (executable or library) to be generated
+ld -l       Links against the specified library, searching for it in the standard library directories.
+ld -pie     Creates a position-independent executable (PIE), which can be loaded at any address in memory
+ld -u       Prevents garbage collection of the specified external symbol.
+ld -L       Adds a directory to the library search path.
+
+## Use of ld
+
+`ld -T linker.script input1.o input2.o -o output`

using-ls-command.md

@@ -24,3 +24,21 @@ Anything not in this list doesn't return anything.
 `ls -v`
 `ls -w` requires some sort of argument to work
 `ls -x`
+
+`ls -A`
+`ls -B`
+`ls -C`
+`ls -D`
+`ls -F`  ends each entry with / in a wide format
+`ls -G`
+`ls -H`
+`ls -I` requires an argument
+`ls -L`
+`ls -N`
+`ls -Q` all entries appear in between double quotes in a wide format
+`ls -R` very interesting output when done by itself
+`ls -S`
+`ls -T` requires an argument.
+`ls -U`
+`ls -X` lists dirs/folders on the left half of a wide format output
+`ls -Z` lists all entries with a ? in a wide format