/usr/lib/ is in gcj-4.6-jdk 4.6.3-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/gcc/
/usr/lib/gcc/x86_64-linux-gnu/
/usr/lib/gcc/x86_64-linux-gnu/4.6/
/usr/lib/gcc/x86_64-linux-gnu/4.6/ecj1
/usr/lib/gcc/x86_64-linux-gnu/4.6/libgcj.spec
/usr/lib/gcc/x86_64-linux-gnu/4.6/jc1
/usr/lib/gcc/x86_64-linux-gnu/4.6/jvgenmain
/usr/lib/gcc/x86_64-linux-gnu/4.6/libgcj_bc.so
/usr/lib/gcc/x86_64-linux-gnu/4.6/include/
/usr/lib/gcc/x86_64-linux-gnu/4.6/include/jni_md.h
/usr/lib/gcc/x86_64-linux-gnu/4.6/include/jvmpi.h
/usr/lib/gcc/x86_64-linux-gnu/4.6/include/jawt.h
/usr/lib/gcc/x86_64-linux-gnu/4.6/include/jawt_md.h
/usr/lib/gcc/x86_64-linux-gnu/4.6/include/gcj/
/usr/lib/gcc/x86_64-linux-gnu/4.6/include/gcj/libgcj-config.h
/usr/lib/gcc/x86_64-linux-gnu/4.6/include/jni.h
/usr/lib/jvm-exports/
/usr/lib/jvm-exports/java-1.5.0-gcj-4.6/
/usr/lib/jvm/
/usr/lib/jvm/java-1.5.0-gcj-4.6/
/usr/lib/jvm/java-1.5.0-gcj-4.6/bin/
/usr/lib/jvm/java-1.5.0-gcj-4.6/bin/jdb
/usr/lib/jvm/java-1.5.0-gcj-4.6/lib/
/usr/lib/jvm/java-1.5.0-gcj-4.6/man/
/usr/lib/jvm/java-1.5.0-gcj-4.6/man/man1/
/usr/lib/jvm/java-1.5.0-gcj-4.6/include/
/usr/lib/jvm/java-1.5.0-gcj-4.6/include/linux/
/usr/lib/gcc/x86_64-linux-gnu/4.6/libgcj-tools.so
/usr/lib/gcc/x86_64-linux-gnu/4.6/libgcj.so
/usr/lib/gcc/x86_64-linux-gnu/4.6/libgij.so
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/usr/lib/jvm-exports/java-1.5.0-gcj-4.6/sasl-1.5.0.0.jar
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/usr/lib/jvm-exports/java-1.5.0-gcj-4.6/jndi-rmi-1.5.0.0.jar
/usr/lib/jvm-exports/java-1.5.0-gcj-4.6/jaas-1.5.0.0.jar
/usr/lib/jvm-exports/java-1.5.0-gcj-4.6/jndi-rmi.jar
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/usr/lib/jvm-exports/java-1.5.0-gcj-4.6/jsse-1.5.0.0.jar
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/usr/lib/jvm-exports/java-1.5.0-gcj-4.6/jndi-dns-1.5.0.0.jar
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/usr/lib/jvm/java-1.5.0-gcj-4.6/include/jni.h