View source for Extract Packages from RPM

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 '''Perhaps you don't want to install the whole qmail rpm'''
 # wget http://repo.qmailtoaster.com/8/spl/sqlmd/mariadb/testing/x86_64/qmail-1.03-3.3.7.qt.md.el8.x86_64.rpm
 List all packages in .rpm file
 # rpm -lqp qmail-1.03-3.3.7.qt.md.el8.x86_64.rpm
 # rpm -lqp qmail-1.03-3.3.9.qt.md.el8.x86_64.rpm |grep qmail-s
 /var/qmail/bin/qmail-send
 /var/qmail/bin/qmail-showctl
 <span style="color:red">/var/qmail/bin/qmail-smtpd</span>
 /var/qmail/bin/qmail-start
 /var/qmail/man/cat5/qmail-spamt.0.bz2
 /var/qmail/man/cat5/qmail-spamthrottle.0.bz2
 /var/qmail/man/cat8/qmail-send.0.bz2
 /var/qmail/man/cat8/qmail-showctl.0.bz2
 /var/qmail/man/cat8/qmail-smtpd.0.bz2
 /var/qmail/man/cat8/qmail-start.0.bz2
 /var/qmail/man/man5/qmail-spamt.5.bz2
 /var/qmail/man/man5/qmail-spamthrottle.5.bz2
 /var/qmail/man/man8/qmail-send.8.bz2
 /var/qmail/man/man8/qmail-showctl.8.bz2
 /var/qmail/man/man8/qmail-smtpd.8.bz2
 /var/qmail/man/man8/qmail-start.8.bz2
 # rpm2cpio qmail-1.03-3.3.7.qt.md.el8.x86_64.rpm | cpio -iv --to-stdout ./var/qmail/bin/qmail-smtpd > /tmp/qmail-smtpd
 # qmailctl stop
 # cp -b /tmp/qmail-smtpd /var/qmail/bin
 cp: overwrite '/var/qmail/bin/qmail-smtpd'? y
 # chmod +x /var/qmail/bin/qmail-smtpd
 # chown root:qmail /var/qmail/bin/qmail-smtpd
 # ls -l /var/qmail/bin/qmail-smtpd*
 /var/qmail/bin/qmail-smtpd
 /var/qmail/bin/qmail-smtpd~