Count lines of code

The following counts all the lines in all *.rb files in the app directory. Run several of these commands to get a rough estimate of the LOC.

find app -name *.rb -exec wc {} \; | awk '{a+=$1;print a}' | tail -1

MySQL replication how-to

This may be awkward to set up, but will work once you're done.

Fun facts:

  • In case of a connection loss the slave will try to reconnect to the master server and resume replication for the next 24 hours
  • If you want to use your slave as a "real" MySQL server, you basically need to switch off replication (STOP SLAVE; RESET SLAVE; and reset your my.cnf) and restart the MySQL daemon.

Master server configuration

  • Create replication user
    In the MySQL shell:
    CREATE USER 'replicator'@'%' IDENTI...
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