Where do I find the bashrc file on Mac?

On some system, instead of the .bashrc file, you can edit your profils' specific by editing:

sudo nano /etc/profile

I would think you should add it to ~/.bash_profile instead of .bashrc, (creating .bash_profile if it doesn't exist.) Then you don't have to add the extra step of checking for ~/.bashrc in your .bash_profile

Are you comfortable working and editing in a terminal? Just in case, ~/ means your home directory, so if you open a new terminal window that is where you will be "located". And the dot at the front makes the file invisible to normal ls command, unless you put -a or specify the file name.

Check this answer for more detail.

The .bashrc file is in your home directory.

So from command line do:

cd
ls -a

This will show all the hidden files in your home directory. "cd" will get you home and ls -a will "list all".

In general when you see ~/ the tilda slash refers to your home directory. So ~/.bashrc is your home directory with the .bashrc file.

And the standard path to homebrew is in /usr/local/ so if you:

cd /usr/local
ls | grep -i homebrew

you should see the homebrew directory (/usr/local/homebrew). Source

Yes sometimes you may have to create this file and the typical format of a .bashrc file is:

# .bashrc

# User specific aliases and functions
. .alias
alias ducks='du -cks * | sort -rn | head -15'

# Source global definitions
if [ -f /etc/bashrc ]; then
    . /etc/bashrc
fi

PATH=$PATH:/home/username/bin:/usr/local/homebrew
export PATH

If you create your own .bashrc file make sure that the following line is in your ~/.bash_profile

# Get the aliases and functions
if [ -f ~/.bashrc ]; then
    . ~/.bashrc
fi

On your Terminal:

• Type cd ~/ to go to your home folder.

• Type touch .bash_profile to create your new file.

• Edit .bash_profile with your code editor (or you can just type open -e .bash_profile to open it in TextEdit).
• Type . .bash_profile to reload .bash_profile and update any functions you add.