鍛戒護(hù)琛屾ā寮?br />
mvn exec:exec -Dexec.executable=sh -Dexec.workingdir=./bin -Dexec.args=hello.sh
閰嶇疆鏂囦歡褰㈠紡
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<executions>
<execution>
<id>test-exec</id>
<phase>initialize</phase>
<configuration>
<executable>sh</executable>
<workingDirectory>./bin</workingDirectory>
<arguments>
<argument>hello.sh</argument>
</arguments>
</configuration>
<goals>
<goal>exec</goal>
</goals>
</execution>
</executions>
</plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<executions>
<execution>
<id>test-exec</id>
<phase>initialize</phase>
<configuration>
<executable>sh</executable>
<workingDirectory>./bin</workingDirectory>
<arguments>
<argument>hello.sh</argument>
</arguments>
</configuration>
<goals>
<goal>exec</goal>
</goals>
</execution>
</executions>
</plugin>
mvn 鐢熸垚java欏圭洰
鐢熸垚楠ㄦ灦
mvn archetype:generate -DgroupId=com.abc.product -DartifactId=product -DpackageName=com.abc.product -DarchetypeArtifactId=maven-archetype-quickstart
杞垚eclipse鑳借瘑鍒殑java 欏圭洰
mvn eclipse:eclipse
瀵煎叆eclipse 鐒跺悗coding mvn榪涜鍗曞厓嫻嬭瘯
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.12.4</version>
<configuration>
<forkMode>pertest</forkMode>
<excludes>
<exclude>**/perftest/*.java</exclude>
</excludes>
<systemProperties>
<property>
<name>log4j.configuration</name>
<value>target/test-classes/log4j.properties</value>
</property>
</systemProperties>
</configuration>
</plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.12.4</version>
<configuration>
<forkMode>pertest</forkMode>
<excludes>
<exclude>**/perftest/*.java</exclude>
</excludes>
<systemProperties>
<property>
<name>log4j.configuration</name>
<value>target/test-classes/log4j.properties</value>
</property>
</systemProperties>
</configuration>
</plugin>
mvn榪涜code coverage緇熻
<reporting>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>emma-maven-plugin</artifactId>
<version>1.0-alpha-3</version>
<inherited>true</inherited>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>surefire-report-maven-plugin</artifactId>
<inherited>true</inherited>
</plugin>
</plugins>
</reporting>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>emma-maven-plugin</artifactId>
<version>1.0-alpha-3</version>
<inherited>true</inherited>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>surefire-report-maven-plugin</artifactId>
<inherited>true</inherited>
</plugin>
</plugins>
</reporting>
mvn鐢熸垚javadoc
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-javadoc-plugin</artifactId>
<version>2.9</version>
<configuration>
<show>private</show>
</configuration>
<executions>
<execution>
<id>attach-javadocs</id>
<goals>
<goal>javadoc</goal>
<goal>test-javadoc</goal>
</goals>
<phase>site</phase>
</execution>
</executions>
</plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-javadoc-plugin</artifactId>
<version>2.9</version>
<configuration>
<show>private</show>
</configuration>
<executions>
<execution>
<id>attach-javadocs</id>
<goals>
<goal>javadoc</goal>
<goal>test-javadoc</goal>
</goals>
<phase>site</phase>
</execution>
</executions>
</plugin>
]]>
perlvar
鐢╬erldoc perlvar 鍙互緇撳悎瀹炰緥鏉ヤ簡(jiǎn)瑙ｆ洿璇︾粏鐨勪俊鎭?br />
涓嬮潰閽堝$@鍐欎簡(jiǎn)涓猵erl alarm鐨勪緥瀛?br />
#!/usr/bin/perl
my $timeout = 5;
$SIG{ALRM} = sub {
die "alarm\n";
};
eval {
alarm $timeout;
sleep(6);
alarm 0;
};
if ($@) {
print "timeout\n";
}
else {
print "not timeout\n";
}
my $timeout = 5;
$SIG{ALRM} = sub {
die "alarm\n";
};
eval {
alarm $timeout;
sleep(6);
alarm 0;
};
if ($@) {
print "timeout\n";
}
else {
print "not timeout\n";
}
]]>
zane鏄ㄥぉ鎺ㄨ崘涓」鐩緷璧栧垎鏋愮殑宸ュ叿: http://www.jboss.org/tattletale
JBoss Tattletale is a tool that can help you get an overview of the project you are working on
or a product that you depend on.
The tool will provide you with reports that can help you
* Identify dependencies between JAR files
* Find missing classes from the classpath
* Spot if a class/package is located in multiple JAR files
* Spot if the same JAR file is located in multiple locations
* With a list of what each JAR file requires and provides
* Verify the SerialVersionUID of a class
* Find similar JAR files that have different version numbers
* Find JAR files without a version number
* Find unused JAR files
* Identify sealed / signed JAR archives
* Locate a class in a JAR file
* Get the OSGi status of your project
or a product that you depend on.
The tool will provide you with reports that can help you
* Identify dependencies between JAR files
* Find missing classes from the classpath
* Spot if a class/package is located in multiple JAR files
* Spot if the same JAR file is located in multiple locations
* With a list of what each JAR file requires and provides
* Verify the SerialVersionUID of a class
* Find similar JAR files that have different version numbers
* Find JAR files without a version number
* Find unused JAR files
* Identify sealed / signed JAR archives
* Locate a class in a JAR file
* Get the OSGi status of your project
浣跨敤鏂規(guī)硶
java -Xmx512m -jar tattletale.jar [-exclude=<excludes>] <scan-directory> [output-directory]
娉ㄦ剰浜嬮」
tattletale鍙垎鏋恓ar鍖呬箣闂寸殑渚濊禆錛岄渶瑕佽嚜宸辨妸鎵鏈夌殑class鏂囦歡鎵撳寘鏀懼叆scan-directory錛岀劧鍚庢妸渚濊禆鐨刲ib涔熸斁鍏ュ悓涓洰褰?/span>
]]>
prompt> cloc perl-5.10.0.tar.gz
4076 text files.
3883 unique files.
1521 files ignored.
http://cloc.sourceforge.net v 1.50 T=12.0 s (209.2 files/s, 70472.1 lines/s)
-------------------------------------------------------------------------------
Language files blank comment code
-------------------------------------------------------------------------------
Perl 2052 110356 130018 292281
C 135 18718 22862 140483
C/C++ Header 147 7650 12093 44042
Bourne Shell 116 3402 5789 36882
Lisp 1 684 2242 7515
make 7 498 473 2044
C++ 10 312 277 2000
XML 26 231 0 1972
yacc 2 128 97 1549
YAML 2 2 0 489
DOS Batch 11 85 50 322
HTML 1 19 2 98
-------------------------------------------------------------------------------
SUM: 2510 142085 173903 529677
-------------------------------------------------------------------------------
4076 text files.
3883 unique files.
1521 files ignored.
http://cloc.sourceforge.net v 1.50 T=12.0 s (209.2 files/s, 70472.1 lines/s)
-------------------------------------------------------------------------------
Language files blank comment code
-------------------------------------------------------------------------------
Perl 2052 110356 130018 292281
C 135 18718 22862 140483
C/C++ Header 147 7650 12093 44042
Bourne Shell 116 3402 5789 36882
Lisp 1 684 2242 7515
make 7 498 473 2044
C++ 10 312 277 2000
XML 26 231 0 1972
yacc 2 128 97 1549
YAML 2 2 0 489
DOS Batch 11 85 50 322
HTML 1 19 2 98
-------------------------------------------------------------------------------
SUM: 2510 142085 173903 529677
-------------------------------------------------------------------------------
Here is command line example:
Usage: cloc-1.56.pl [options] <file(s)/dir(s)> | <set 1> <set 2> | <report files>
]]>
In many cases, binaries can no longer dump core after calling setuid().
Under Linux it is possible to re-enable this with a system call.
e.g.
+#ifdef __linux__
+#include <sys/prctl.h>
+#endif
+
#ifdef HAVE_purify
#define IF_PURIFY(A,B) (A)
#else
@@ -1362,6 +1366,10 @@
sql_perror("setuid");
unireg_abort(1);
}
+#ifdef __linux__
+ /* inform kernel that process is dumpable */
+ prctl(PR_SET_DUMPABLE,1,0,0,0);
+#endif /* __linux__ */
#endif
+#include <sys/prctl.h>
+#endif
+
#ifdef HAVE_purify
#define IF_PURIFY(A,B) (A)
#else
@@ -1362,6 +1366,10 @@
sql_perror("setuid");
unireg_abort(1);
}
+#ifdef __linux__
+ /* inform kernel that process is dumpable */
+ prctl(PR_SET_DUMPABLE,1,0,0,0);
+#endif /* __linux__ */
#endif
Manual of prctl
PR_SET_DUMPABLE
(Since Linux 2.4) Set the state of the flag determining whether core dumps are produced for this process upon delivery of a
signal whose default behaviour is to produce a core dump. (Normally this flag is set for a process by default, but it is
cleared when a set-user-ID or set-group-ID program is executed and also by various system calls that manipulate process UIDs
and GIDs). In kernels up to and including 2.6.12, arg2 must be either 0 (process is not dumpable) or 1 (process is dumpable).
Since kernel 2.6.13, the value 2 is also permitted; this causes any binary which normally would not be dumped to be dumped
readable by root only. (See also the description of /proc/sys/fs/suid_dumpable in proc(5).)
(Since Linux 2.4) Set the state of the flag determining whether core dumps are produced for this process upon delivery of a
signal whose default behaviour is to produce a core dump. (Normally this flag is set for a process by default, but it is
cleared when a set-user-ID or set-group-ID program is executed and also by various system calls that manipulate process UIDs
and GIDs). In kernels up to and including 2.6.12, arg2 must be either 0 (process is not dumpable) or 1 (process is dumpable).
Since kernel 2.6.13, the value 2 is also permitted; this causes any binary which normally would not be dumped to be dumped
readable by root only. (See also the description of /proc/sys/fs/suid_dumpable in proc(5).)
Ref: http://bugs.mysql.com/bug.php?id=21723
Some files about linux core dump:
/proc/sys/fs/suid_dumpable
/etc/profile
/etc/security/limits.conf
/proc/sys/kernel/core_pattern
/etc/profile
/etc/security/limits.conf
/proc/sys/kernel/core_pattern
]]>
http://net-snmp.sourceforge.net/wiki/index.php/Tutorials
2. Config & start agent
snmpconf
3. snmpwalk example
snmpwalk -v2c -c public 10.1.74.51
4. check MIB modules
snmptranslate -Dinit_mib .1.3 2>&1 |grep MIBDIR
5. extending MIB Module
http://net-snmp.sourceforge.net/wiki/index.php/TUT:Writing_a_MIB_Module
a. download net-snmp src code
b. MIB definition
c. mib2c (in net-snmp-perl)
d. make & make install
e. edit snmpd conf & restart agent
f. snmpwalk to verify
]]>
Download:
http://www.graphviz.org/Download..php
Install:
http://www.graphviz.org/Download_linux_rhel.php
Document:
http://www.graphviz.org/Documentation.php
Example:
$ cat cluster.dot
digraph G {
subgraph cluster_0 {
style=filled;
color=lightgrey;
node [style=filled,color=white];
a0 -> a1 -> a2 -> a3;
label = "process #1";
}
subgraph cluster_1 {
node [style=filled];
b0 -> b1 -> b2 -> b3;
label = "process #2";
color=blue
}
start -> a0;
start -> b0;
a1 -> b3;
b2 -> a3;
a3 -> a0;
a3 -> end;
b3 -> end;
start [shape=Mdiamond];
end [shape=Msquare];
}
$ dot -Tpng cluster.dot -o cluster.png
$ gnome-open cluster.png
digraph G {
subgraph cluster_0 {
style=filled;
color=lightgrey;
node [style=filled,color=white];
a0 -> a1 -> a2 -> a3;
label = "process #1";
}
subgraph cluster_1 {
node [style=filled];
b0 -> b1 -> b2 -> b3;
label = "process #2";
color=blue
}
start -> a0;
start -> b0;
a1 -> b3;
b2 -> a3;
a3 -> a0;
a3 -> end;
b3 -> end;
start [shape=Mdiamond];
end [shape=Msquare];
}
$ dot -Tpng cluster.dot -o cluster.png
$ gnome-open cluster.png
More examples:
http://www.graphviz.org/Gallery.php
]]>
]]>