postinst is in gcj-5-jdk 5.3.1-14ubuntu2.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 | #! /bin/sh -e
if [ -d /usr/share/doc/gcc-5-base/java ] && [ ! -h /usr/share/doc/gcc-5-base/java ]; then
rm -rf /usr/share/doc/gcc-5-base/java
ln -s ../gcj-5-base /usr/share/doc/gcc-5-base/java
fi
prio=1050
update-alternatives --quiet \
--install /usr/bin/javac javac /usr/bin/gcj-wrapper-5 $prio \
--slave /usr/share/man/man1/javac.1.gz javac.1.gz /usr/share/man/man1/gcj-wrapper-5.1.gz
update-alternatives --quiet \
--install /usr/bin/jar jar /usr/bin/gjar-5 $prio \
--slave /usr/share/man/man1/jar.1.gz jar.1.gz /usr/share/man/man1/gjar-5.1.gz
update-alternatives --quiet \
--install /usr/bin/jarsigner jarsigner /usr/bin/gjarsigner-5 $prio \
--slave /usr/share/man/man1/jarsigner.1.gz jarsigner.1.gz /usr/share/man/man1/gjarsigner-5.1.gz
update-alternatives --quiet \
--install /usr/bin/javah javah /usr/bin/gjavah-5 $prio \
--slave /usr/share/man/man1/javah.1.gz javah.1.gz /usr/share/man/man1/gjavah-5.1.gz
update-alternatives --quiet \
--install /usr/bin/javadoc javadoc /usr/bin/gjdoc-5 $prio \
--slave /usr/share/man/man1/javadoc.1.gz javadoc.1.gz /usr/share/man/man1/gjdoc-5.1.gz
update-alternatives --quiet \
--install /usr/bin/native2ascii native2ascii /usr/bin/gnative2ascii-5 $prio \
--slave /usr/share/man/man1/native2ascii.1.gz native2ascii.1.gz /usr/share/man/man1/gnative2ascii-5.1.gz
update-alternatives --quiet \
--install /usr/bin/rmic rmic /usr/bin/grmic-5 $prio \
--slave /usr/share/man/man1/rmic.1.gz rmic.1.gz /usr/share/man/man1/grmic-5.1.gz
update-alternatives --quiet \
--install /usr/bin/serialver serialver /usr/bin/gserialver-5 $prio \
--slave /usr/share/man/man1/serialver.1.gz serialver.1.gz /usr/share/man/man1/gserialver-5.1.gz
update-alternatives --quiet \
--install /usr/bin/tnameserv tnameserv /usr/bin/gtnameserv-5 $prio \
--slave /usr/share/man/man1/tnameserv.1.gz tnameserv.1.gz /usr/share/man/man1/gtnameserv-5.1.gz
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