How do I create a Bash alias?

Question

I\'m on OSX and I need to put something like this, alias blah=\"/usr/bin/blah\" in a config file but I don\'t know where the config file is.

Answer 1

I need to run the Postgres database and created an alias for the purpose. The work through is provided below:

$ nano ~/.bash_profile 

# in the bash_profile, insert the following texts:

alias pgst="pg_ctl -D /usr/local/var/postgres start"
alias pgsp="pg_ctl -D /usr/local/var/postgres stop"


$ source ~/.bash_profile 

### This will start the Postgres server 
$ pgst

### This will stop the Postgres server 
$ pgsp