Using the Redhat package management tool

To list available packages and narrow selection, at the shell prompt, use

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yum list available yum list available \| grep -iF PATTERN yum list available \| grep -iF java yum list available \| grep -iF tomcat

To install a package, use

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yum install PACKAGE

To list installed packages and narrow selection, use

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yum list installed yum list installed \| grep -iF PATTERN yum list available \| grep -iF java yum list installed \| grep -iF tomcat

To list an installed package's files, use

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rpm -ql PACKAGE yum list installed \| fgrep tomcat rpm -ql tomcat5 yum list installed \| fgrep java rpm -ql java-1.5.0-sun

Using the Redhat service management tool

The system services are operated by scripts in

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/etc/init.d/

To display helpful usage instruction, use

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cd /etc/init.d ./sshd Usage: ./sshd {start\|stop\|restart\|reload\|condrestart\|status}

Note: The service(8) command manages the system services.

To check the status of a service

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service SERVICE status service postgresql status

To stop a service

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service SERVICE stop

To start a service

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service SERVICE start

The chkconfig(8) command manages system services at init boot time.

To have a service start at init boot time

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chkconfig SERVICE on chkconfig tomcat5 on chkconfig postgresql on