diff --git a/trunk/conf/full.conf b/trunk/conf/full.conf
index 06fdfdb9d..19224ec04 100644
--- a/trunk/conf/full.conf
+++ b/trunk/conf/full.conf
@@ -17,7 +17,11 @@ chunk_size          60000;
 # the logs dir.
 # if enabled ffmpeg, each stracoding stream will create a log file.
 # default: ./objs/logs
-log_dir             ./objs/logs;
+ff_log_dir          ./objs/logs;
+# the log file for srs.
+# if not specified, disable log to file, only print to console.
+# if speicfied, write log to file and print to console.
+srs_log_file        ./objs/srs.log;
 # the max connections.
 # if exceed the max connections, server will drop the new connection.
 # default: 2000
diff --git a/trunk/conf/srs.conf b/trunk/conf/srs.conf
index 0e4140af3..d316884ae 100644
--- a/trunk/conf/srs.conf
+++ b/trunk/conf/srs.conf
@@ -2,5 +2,6 @@
 # @see full.conf for detail config.
 
 listen              1935;
+srs_log_file        ./objs/srs.log;
 vhost __defaultVhost__ {
 }
diff --git a/trunk/configure b/trunk/configure
index 9e7b7c8f4..61f170b3d 100755
--- a/trunk/configure
+++ b/trunk/configure
@@ -129,10 +129,10 @@ echo -e "     |     ${SrsGprofSummaryColor}gprof -b ./objs/srs gmon.out > gprof.
 echo -e "     \${BLACK}+------------------------------------------------------------------------------------\${BLACK}"
 echo -e "     |${SrsResearchSummaryColor}research: ./objs/research, api server, players, ts info.\${BLACK}"
 echo -e "     \${BLACK}+------------------------------------------------------------------------------------\${BLACK}"
-echo -e "     |${SrsUtestSummaryColor}utest: ./objs/srs_utest, the utest for srs\${BLACK}"
-echo -e "     \${BLACK}+------------------------------------------------------------------------------------\${BLACK}"
 echo -e "     |${SrsBWTCSummaryColor}bandwidth: ./objs/bandwidth, the bandwidth test client\${BLACK}"
 echo -e "     \${BLACK}+------------------------------------------------------------------------------------\${BLACK}"
+echo -e "     |${SrsUtestSummaryColor}utest: ./objs/srs_utest, the utest for srs\${BLACK}"
+echo -e "     \${BLACK}+------------------------------------------------------------------------------------\${BLACK}"
 echo -e "     |${SrsLibrtmpSummaryColor}librtmp @see: https://github.com/winlinvip/simple-rtmp-server/wiki/SrsLibrtmp\${BLACK}"
 echo -e "     |${SrsLibrtmpSummaryColor}librtmp: ./objs/include, ./objs/lib, the srs-librtmp library\${BLACK}"
 echo -e "     |     ${SrsLibrtmpSummaryColor}simple handshake: publish/play stream with simple handshake to server\${BLACK}"
diff --git a/trunk/etc/init.d/srs b/trunk/etc/init.d/srs
index 9b7bf849c..d1b5fd139 100755
--- a/trunk/etc/init.d/srs
+++ b/trunk/etc/init.d/srs
@@ -16,6 +16,7 @@ ROOT="./"
 APP="./objs/srs"
 CONFIG="./conf/srs.conf"
 DEFAULT_PID_FILE='./objs/srs.pid'
+DEFAULT_LOG_FILE='./objs/srs.log'
 
 ########################################################################
 # utility functions
@@ -65,10 +66,17 @@ start() {
     
     # not exists, start server
     ok_msg "Starting SRS..."
+    
+    # get log file
+    srs_log_file=`cat ${ROOT}/${CONFIG} |grep '^srs_log_file'| awk '{print $2}'| awk -F ';' '{print $1}'`
+    
     # TODO: FIXME: set limit by, for instance, "ulimit -HSn 10000"
-    # TODO: FIXME: write log to, for instance, the same dir of log.
     # TODO: FIXME: support deamon, without nohup.
-    (cd ${ROOT}; nohup ${APP} -c ${CONFIG} >/dev/null 2>&1 &)
+    if [[ -z $srs_log_file ]]; then
+        (cd ${ROOT}; nohup ${APP} -c ${CONFIG} >/dev/null 2>&1 &)
+    else
+        (cd ${ROOT}; nohup ${APP} -c ${CONFIG} >> $srs_log_file 2>&1 &)
+    fi
     
     # check again after start server
     sleep 0.5
diff --git a/trunk/src/app/srs_app_config.cpp b/trunk/src/app/srs_app_config.cpp
index 5d677b147..353195c4e 100644
--- a/trunk/src/app/srs_app_config.cpp
+++ b/trunk/src/app/srs_app_config.cpp
@@ -684,6 +684,11 @@ int SrsConfig::parse_file(const char* filename)
     // TODO: check http.
     // TODO: check pid.
     
+    std::string filename = this->get_srs_log_file();
+    if (!filename.empty()) {
+        srs_trace("open log file %s and write to", filename.c_str());
+    }
+    
     return ret;
 }
 
@@ -1253,11 +1258,11 @@ string SrsConfig::get_engine_output(SrsConfDirective* engine)
     return conf->arg0();
 }
 
-string SrsConfig::get_log_dir()
+string SrsConfig::get_ffmpeg_log_dir()
 {
     srs_assert(root);
     
-    SrsConfDirective* conf = root->get("log_dir");
+    SrsConfDirective* conf = root->get("ff_log_dir");
     if (!conf || conf->arg0().empty()) {
         return "./objs/logs";
     }
@@ -1265,6 +1270,18 @@ string SrsConfig::get_log_dir()
     return conf->arg0();
 }
 
+string SrsConfig::get_srs_log_file()
+{
+    srs_assert(root);
+    
+    SrsConfDirective* conf = root->get("srs_log_file");
+    if (!conf || conf->arg0().empty()) {
+        return "";
+    }
+    
+    return conf->arg0();
+}
+
 int SrsConfig::get_max_connections()
 {
     srs_assert(root);
diff --git a/trunk/src/app/srs_app_config.hpp b/trunk/src/app/srs_app_config.hpp
index ae5699d1b..85c244fcf 100644
--- a/trunk/src/app/srs_app_config.hpp
+++ b/trunk/src/app/srs_app_config.hpp
@@ -147,7 +147,8 @@ public:
     virtual int                 get_engine_achannels(SrsConfDirective* engine);
     virtual void                get_engine_aparams(SrsConfDirective* engine, std::vector<std::string>& aparams);
     virtual std::string         get_engine_output(SrsConfDirective* engine);
-    virtual std::string         get_log_dir();
+    virtual std::string         get_ffmpeg_log_dir();
+    virtual std::string         get_srs_log_file();
     virtual int                 get_max_connections();
     virtual bool                get_gop_cache(std::string vhost);
     virtual double              get_queue_length(std::string vhost);
diff --git a/trunk/src/app/srs_app_encoder.cpp b/trunk/src/app/srs_app_encoder.cpp
index 3fbc79787..f418e02a3 100644
--- a/trunk/src/app/srs_app_encoder.cpp
+++ b/trunk/src/app/srs_app_encoder.cpp
@@ -118,7 +118,7 @@ int SrsFFMPEG::initialize(SrsRequest* req, SrsConfDirective* engine)
     output = srs_replace(output, "[engine]", engine->arg0());
     
     // write ffmpeg info to log file.
-    log_file = _srs_config->get_log_dir();
+    log_file = _srs_config->get_ffmpeg_log_dir();
     log_file += "/";
     log_file += "encoder";
     log_file += "-";
diff --git a/trunk/src/app/srs_app_log.cpp b/trunk/src/app/srs_app_log.cpp
index 2c877e52a..a327171eb 100644
--- a/trunk/src/app/srs_app_log.cpp
+++ b/trunk/src/app/srs_app_log.cpp
@@ -26,6 +26,12 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include <stdarg.h>
 #include <sys/time.h>
 
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include <srs_app_config.hpp>
+
 SrsThreadContext::SrsThreadContext()
 {
 }
@@ -57,11 +63,18 @@ SrsFastLog::SrsFastLog()
 {
     level = SrsLogLevel::Trace;
     log_data = new char[LOG_MAX_SIZE];
+
+    fd = -1;
 }
 
 SrsFastLog::~SrsFastLog()
 {
     srs_freepa(log_data);
+
+    if (fd > 0) {
+        ::close(fd);
+        fd = -1;
+    }
 }
 
 void SrsFastLog::verbose(const char* tag, int context_id, const char* fmt, ...)
@@ -229,4 +242,24 @@ void SrsFastLog::write_log(char *str_log, int size, int _level)
     } else{
         printf("\033[31m%s\033[0m", str_log);
     }
+
+    // if specified log file, write log to it.
+    if (!_srs_config->get_srs_log_file().empty()) {
+        if (fd < 0) {
+            std::string filename = _srs_config->get_srs_log_file();
+            
+            fd = ::open(filename.c_str(), O_RDWR | O_APPEND);
+            
+            if(fd == -1 && errno == ENOENT) {
+                fd = open(filename.c_str(), 
+                    O_RDWR | O_CREAT | O_TRUNC, 
+                    S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH
+                );
+            }
+        }
+
+        if (fd > 0) {
+            ::write(fd, str_log, size);
+        }
+    }
 }
diff --git a/trunk/src/app/srs_app_log.hpp b/trunk/src/app/srs_app_log.hpp
index 4967368aa..8200e04c0 100644
--- a/trunk/src/app/srs_app_log.hpp
+++ b/trunk/src/app/srs_app_log.hpp
@@ -80,6 +80,8 @@ private:
     // defined in SrsLogLevel.
     int level;
     char* log_data;
+    // log to file if specified srs_log_file
+    int fd;
 public:
     SrsFastLog();
     virtual ~SrsFastLog();
diff --git a/trunk/src/core/srs_core.hpp b/trunk/src/core/srs_core.hpp
index 5993fd7fe..5a1e1f844 100644
--- a/trunk/src/core/srs_core.hpp
+++ b/trunk/src/core/srs_core.hpp
@@ -31,7 +31,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 // current release version
 #define VERSION_MAJOR "0"
 #define VERSION_MINOR "9"
-#define VERSION_REVISION "26"
+#define VERSION_REVISION "27"
 #define RTMP_SIG_SRS_VERSION VERSION_MAJOR"."VERSION_MINOR"."VERSION_REVISION
 // server info.
 #define RTMP_SIG_SRS_KEY "srs"