Alias command help

Shell Programming and Scripting
1

Hello,
I'm attempting to configure shell settings in my new Macbook. The standard unix command line 'alias' doesn't seem to be working:

bash-3.2$ alias dir ls -la 
bash: alias: dir: not found
bash: alias: ls: not found
bash: alias: -la: not found

bash-3.2$ alias dir 'ls -la'
bash: alias: dir: not found
bash: alias: ls -la: not found

Is there some new, strange syntax of which I am not aware?
Thanks!

2

The syntax is slightly wrong.

alias dir='ls -al'
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