Add wip lab 3

lab-1/LAB-REPORT.md

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+# Lab 1
+## Tasks
+
+- [x] 1. **Connect**
+```
+I ran the commands from VirtualBox
+```
+- [x] 2. **Explore**
+```
+I ran the sample commands
+```
+- [x] 3. **Play**
+  - [x] grep
+    ```sh
+    vboxuser@ubel:~/lab-1$ vim extra/folders/example.txt 
+    vboxuser@ubel:~/lab-1$ grep -i "Error" syslog
+    this is an error i am an error!
+    yeah I am another error!
+    vboxuser@ubel:~/lab-1$ grep -ir "Error" syslog
+    this is an error i am an error!
+    yeah I am another error!
+    vboxuser@ubel:~/lab-1$ ls
+    extra  syslog
+    vboxuser@ubel:~/lab-1$ ls
+    extra  syslog
+    vboxuser@ubel:~/lab-1$ grep -r "error" syslog
+    this is an error i am an error!
+    yeah I am another error!
+    vboxuser@ubel:~/lab-1$ ls
+    extra  syslog
+    vboxuser@ubel:~/lab-1$ cat extra/folders/example.txt 
+    error I am a file
+    hello world
+    i am not an
+    but this is an error!
+    vboxuser@ubel:~/lab-1$ grep -r "error" .
+    ./extra/folders/example.txt:error I am a file
+    ./extra/folders/example.txt:but this is an error!
+    ./syslog:this is an error i am an error!
+    ./syslog:yeah I am another error!
+    vboxuser@ubel:~/lab-1$ grep -rc "error" .
+    ./extra/folders/example.txt:2
+    ./syslog:2
+    vboxuser@ubel:~/lab-1$ grep -ra "error" .
+    ./extra/folders/example.txt:error I am a file
+    ./extra/folders/example.txt:but this is an error!
+    ./syslog:this is an error i am an error!
+    ./syslog:yeah I am another error!
+    vboxuser@ubel:~/lab-1$ grep -rb "error" .
+    ./extra/folders/example.txt:0:error I am a file
+    ./extra/folders/example.txt:48:but this is an error!
+    ./syslog:0:this is an error i am an error!
+    ./syslog:47:yeah I am another error!
+    ```
+  - [x] tail
+    Displays the end of the file -- if you add -f (for follow),
+    you can display the contents indefinitely. It is fun to snoop
+    on bots who are trying to log into my server, and this command is useful
+    for that.
+    ```sh
+     sudo tail -f /var/log/auth.log
+    ```
+
+  - [x] man
+    Better than Google when you have no internet connection
+    or access to chatGPT. Holds an exhaustive (I assume) list of
+    available commands.
+    ```sh
+    man grep
+    man man
+    ```
+
+  - [x] history
+    Shows command history. I would usually use zsh and, if I needed to run a
+    command, I would just press the "up" arrow. That is very tedious if
+    I need to run something that I did > 5 commands ago. This is very useful
+    if I needed to run an obscure command. Or maybe to just figure out what I did.
+    ```sh
+    history
+    history | grep "tail"
+    man history
+    ```
+
+  - [x] df
+    Never used this command before. I randomly decided to check this on both MacOS 
+    (my computer is always running out of space for some reason or other) 
+    as well as on one of my linux boxes.
+
+    There are a lot of differences. Feels like more similarities than differences,
+    but a lot of the important columns are the same. It's also a good command
+    for keeping an eye on the mounted volumes on my linux box.
+
+    Also, since the two commands are so different, I don't think I'll ever be able
+    to remember them!
+
+    Stands for "disk free".
+    ```sh (on Mac)
+    df (display free disk space)
+    df -h
+    ```
+    ```sh (on VM Ubuntu)
+    df (report file system space usage)
+    df -h
+    ```
+  - [x] du
+    Displays file usage. Should use this to investigate where all the space
+    on my local Mac is going.
+
+    ```sh
+    man du
+    du -hS
+    du -s * | sort -nr > $HOME/user_space_report.txt
+    ```
+  - [x] ps
+    Showed me a list of running processes. By default it only shows you
+    the processes that were started/were run personally by you on a terminal. 
+    
+    Also: the man for `ps` under the Ubuntu box mentioned you can use 
+      UNIX (?), BSD (default for mac os?), and GNU (what I assume are the usual default commands) options for ps, provided you use the flags in a specific way.
+    
+    Once in a blue moon I have to use pkill some orphaned program, and without fail 
+    I have to google how to every time. Maybe I can just use the pids from here instead?
+    ```sh (on Mac)
+    man ps
+    ps -A
+    ```
+    ```sh (on Linux)
+    man ps
+    ```
+  - [x] top
+    Looks similar to ps, but you get a whole dashboard. I could
+    see how you could use this to monitor programs. This is the
+    text version of what I'd use the activity monitor for.
+    ```sh
+    top
+    ```
+  - [x] htop
+    Top, but **fancier**! It's keyboard navigable AND mouse navigable,
+    and comes with a bunch of colors out of the box. Very cool!
+    ```sh
+    htop
+    ```
+  - [x] exit
+    Exits you out of the current terminal session.
+
+extra reading
+- [x] [The Linux Command Line](http://linuxcommand.org/tlcl.php)
+  WIP still reading this
+- [x] [Grep mini-zine](https://wizardzines.com/comics/grep/)
+- [x] [reddit thread: bsd v gnu](https://old.reddit.com/r/linuxquestions/comments/vzmfye/differences_between_bsd_and_gnu_utilities/)
+    * Most of this goes completely over my head. But this was interesting to look at.