tlog

#! /usr/bin/env bash
logdirs="./ log/ logs/"
logfile="test.log"

help="Usage: `basename $0` [logfilename]

Options: none

This script will run a 'tail -f' operation on the specified log file
(default: ${logfile}), filtering out DatabaseCleaner-specific strings
as it goes.

If no directory is specified in the logfilename and the file does not exist in
the current directory, then 'log/' and 'logs/' will be prepended to the name to
see if it resides in either of those known subdirectories.  If not found then
the command will fail.
"

case $# in
  0) logfile=test.log
    ;;
  1) logfile=$1
    ;;
  *)
     echo 1>&2 "?Wrong number of arguments: $*"
     echo 1>&2 "$help"
     exit 1
     ;;
esac

logpath=""
case $logfile in
  */*) logpath=$logfile;;
  *)
    for dir in $logdirs
    do
      test -f $dir$logfile && {
        logpath="$dir$logfile"
        break
      }
    done
esac

case $logpath in
  "")
    echo 1>&2 "?$logfile not found in any of: $logdirs"
    echo 1>&2 "$help"
    exit 2
    ;;
  *)
    echo 1>&2 "Filtering tail of $logpath..."
    ;;
esac

tail -f $logpath | egrep --line-buffered -v "TRIGGER|TRUNCATE|NoMethodError: undefined method .example_group."