sudo service iptables save
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iptables: delete a rule
# delete the rule by specifying the whole rule iptables -D INPUT -p tcp -m state --state NEW -m tcp --dport 4000 -j ACCEPT
# list the rules with line numbers iptables -L INPUT --line-numbers # delete the rule by specifying the line number of the rule (suppose the line number of the rule is 2). iptables -D INPUT 2
iptables: insert a rule at a specific line number
# list the rules with line numbers iptables -nL --line-numbers
# insert a rule at line 5 iptables -I INPUT 5 -p tcp -m state --state NEW -m tcp --dport 4000 -j ACCEPT
m2eclipse: use java 1.6 instead of 1.5
m2eclipse uses java 1.5 by default. To make your project use java 1.6. you need to edit your pom.xml file:
then right click your project in eclipse, select Maven -> Update Maven Project.
<project> ... ... <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>2.1</version> <configuration> <source>1.6</source> <target>1.6</target> </configuration> </plugin> </plugins> </build> </project>
then right click your project in eclipse, select Maven -> Update Maven Project.
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