Reverse upper and lower case letters

Intro
I am a look-at-the-keyboard typist! I can’t count the number of times I’ve begun an email with CAPs lock on, and found a nice correspondence looking like this:

hI aNDRES,
 
i RE-CREATED THE SCRIPT.
...

Tired of the re-typing I researched how to quickly repair this, at least for those with a linux command prompt at their disposal.

The details
I added this to my .aliases file:

# reverse upper/lower case
reverse () { tr 'A-Za-z' 'a-zA-Z'; }

Now when I make this mistake I put the text into my clipboard, even if it is multi-line, and fix it like this:

$ echo 'hI aNDRES,

i RE-CREATED THE SCRIPT.'|reverse

Hi Andres,
 
I re-created the script.

After the single quote I pasted in my clipboard text and closed that out with another single quote.

Alternative for those uncertain about Linux aliases
Alternatively, right on the command line you would just run

$ echo 'hI aNDRES,

i RE-CREATED THE SCRIPT.'|tr 'A-Za-z' 'a-zA-Z'

Conclusion
We developed an alias expression to make exchanging upper and lower case in a character string fast and easy, if you just remember a few things and have access to a Linux command prompt.

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