Thursday, February 21, 2013

Execute one line command on IRB or Rails's console through Unix shell

Basic Unix approach - echo and pipe:
$ echo "<command>" | irb
For example,
$ echo "1 + 1" | irb
1 + 1
You can change irb to rails console to execute that command in the Rails environment.

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[PostgreSQL] How to create read-only standby replica (follower)

This link  and this link explain it really well and concise