Add logs command to view/tail Nginx log files

[swalkinshaw]

Closes #5

Usage: trellis logs [options] ENVIRONMENT [SITE]

Tails the Nginx log files for an environment.

Automatically integrates with https://goaccess.io/ when the --goaccess option is used.

View production logs:

  $ trellis logs production

View access logs only:

  $ trellis logs --access production

View error logs only:

  $ trellis logs --error production

View logs in goaccess:

  $ trellis logs --goaccess production

Pass flags to goaccess:

  $ trellis logs --goaccess-flags="-a -m" production

View the last 50 log lines (-n corresponds to tail's -n option):

  $ trellis logs -n 50 production

Arguments:
  ENVIRONMENT Name of environment (ie: production)
  SITE        Name of site (ie: example.com)
  
Options:
      --access          Show access logs only
      --error           Show error logs only
  -g, --goaccess        Uses goaccess as the log viewer instead of tail
      --goaccess-flags  Flags to pass to the goaccess command (in quotes)
  -n, --number          Location (number lines) corresponding to tail's '-n' argument
  -h, --help            Show this help