To change your default directory (in Windows 10, as of Dec 2019)
- Go to: C:\Users\<name>\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Windows System
- Right-click Command Prompt > Properties
- Shortcut tab > change "Start in" to any bash path

If you have pinned Command Prompt to your taskbar, you'll need to remove it and then re-pin it to see the change.

AppData is a hidden folder.

An application window is open, but is off the screen so I can't see it.

Shift+Right-click window in Task Bar > select Move > move the cursor around until you can see the window

To copy from the command line:
- Drag and drop with mouse to highlight text
- Right-click mouse
The text has been copied to your clipboard.

To copy to the command line:
- Copy to clip board like normal
- Right-click mouse in command line where you want the text inserted

Display the first screen-worth of a file:

more fileName

Click "enter" to see one more line.
Click "space" to see one more screen-worth.
Click "q" for Quit to exit.

Skip the first 10 lines of the file:

more +10 fileName

List all the paths where this program is found.

where python

Useful for figuring out why the old version of python is still running.

Search results of "dir" for a string

dir | findstr "notes"

Search a file for a string:

findstr "notes" fileName

Outputs each line containing that string.

Display line number of each match:

findstr /n "notes" fileName

Search for multiple strings using "space" delimiter:

findstr "notes other" fileName

To search for strings containing spaces, do one of the following:
- use "/c: string" parameter
- use "." instead of " "

List files in directory that contain the string:

findstr /M "notes" directoryName

List lines in files in directory that contain the string:

findstr "notes" directoryName

Search directory recursively:

findstr /s "notes" directoryName

Displays path to file with each match.

Parameters can be specified individually, or all together.
These commands are the same, specifying recursive directory search, case insensitive, display just file name, and don't search files with strange characters.

findstr /s /i /m /p "string" *
findstr /simp "string" *

/a: colorAttribute Specifies color attributes with two hexadecimal digits

/b Matches pattern only to beginning of line

/c: string Runs literal match search on for "string"

/d: dirList Searches this comma-delimited list of directories

/e Matches pattern only to end of line

/f: fileName Processes files listed in this file

/g: fileName Gets search strings from this file

/i Case-insensitive search

/l Matches search string literally (slash-letter-ell)

/m Prints only the file name of each file with a match

/n Prints the line number with each match

/o Prints seek-offset before each matching line

/offline Processes files with offline attribute sets

/p Skips files with non-printable characters

/r Matches search string as a regular expression (default, unless you use /l)

/s Search directory recursively

/v Prints only lines can do not match

/x Matches entire line only

period (.) matches any single character

asterisk (*) means the previous character/set/etc can be matched 0 or more times

So "A.*C" will match "AC", "ABC", "A483hskduf89C", etc
I think