Before (Log4j 1.x)
###### Console appender definition #######
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.layout=org.alfresco.util.log.log4j.SanitizingPatternLayout
log4j.appender.Console.layout.ConversionPattern=%d{ISO8601} %x %-5p [%c{3}] [%t] %m%n
###### File appender definition (daily rolling file) #######
log4j.appender.File=org.apache.log4j.DailyRollingFileAppender
log4j.appender.File.File=alfresco.log
log4j.appender.File.Append=true
log4j.appender.File.DatePattern='.'yyyy-MM-dd
log4j.appender.File.layout=org.alfresco.util.log.log4j.SanitizingPatternLayout
log4j.appender.File.layout.ConversionPattern=%d{yyyy-MM-dd} %d{ABSOLUTE} %-5p [%c] [%t] %m%n
After (Log4j 2.x)
###### Console appender definition #######
appender.console.type=Console
appender.console.name=ConsoleAppender
appender.console.layout.type=PatternLayout
appender.console.layout.pattern=%d{ISO8601} %x %-5p [%c{3}] [%t] %replace{%m}{[\r\n]+}{}%n
###### File appender definition (daily rolling file) #######
appender.rolling.type=RollingFile
appender.rolling.name=RollingAppender
appender.rolling.fileName=alfresco.log
appender.rolling.filePattern=alfresco.log.%d{yyyy-MM-dd}
appender.rolling.layout.type=PatternLayout
appender.rolling.layout.pattern=%d{yyyy-MM-dd} %d{ABSOLUTE} %-5p [%c] [%t] %replace{%m}{[\r\n]+}{}%n
appender.rolling.policies.type=Policies
appender.rolling.policies.time.type=TimeBasedTriggeringPolicy
appender.rolling.policies.time.interval=1