tail_from_sentinel | Reads a file , but only returns content once a marker

tail_from_sentinel is a Ruby library. tail_from_sentinel has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

Parses a file, looking for a sentinel line that satisfies a block, and returns all lines from there until the end of the file (including the sentinel itself). This can be handy when you are looking for information in a log file only after a certain condition (eg. a date) has been met. You can either use it on it's own, or subclass it to build your own custom tail-like classes. Standalone: File.open('/var/log/messages', 'r') do |file| tfs=TailFromSentinel::Base.new(file) { |line| line =~ /Dec 20 11:2\d+/ } end tfs.data # => [ 'Dec 20 11:20:00 ...', 'Dec 20 11:21:00 ...', ... ]. Subclassed: class TailMyFile < TailFromSentinel::Base DATA_ROOT="/path/to/data/". t=TailMyFile.new('production.log') t.data # => [ 'Started GET "/pattern ...", " Processing ... ", ... ].