What are the files and directories installed for openjdk 8 for?

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I installed openjdk on Lubuntu 18.04 by



$ sudo apt install openjdk-8-jdk


The files and directories it has installed under /usr/lib/jvm/ for openjdk-8 are



$ ls -la /usr/lib/jvm 
total 28
drwxr-xr-x 5 root root 4096 May 20 23:08 .
drwxr-xr-x 109 root root 4096 May 20 22:52 ..
lrwxrwxrwx 1 root root 20 Apr 26 11:59 java-1.8.0-openjdk-amd64 -> java-8-openjdk-amd64
-rw-r--r-- 1 root root 2600 Apr 26 11:59 .java-1.8.0-openjdk-amd64.jinfo
drwxr-xr-x 7 root root 4096 May 20 23:08 java-8-openjdk-amd64


What are the three files and directories for respectively?



In particular, what differences are between the two directories?



$ ls -l /usr/lib/jvm/java-1.8.0-openjdk-amd64/ /usr/lib/jvm/java-8-openjdk-amd64/
/usr/lib/jvm/java-1.8.0-openjdk-amd64/:
total 20
lrwxrwxrwx 1 root root 22 Apr 26 11:59 ASSEMBLY_EXCEPTION -> jre/ASSEMBLY_EXCEPTION
drwxr-xr-x 2 root root 4096 May 20 23:08 bin
lrwxrwxrwx 1 root root 41 Apr 26 11:59 docs -> ../../../share/doc/openjdk-8-jre-headless
drwxr-xr-x 3 root root 4096 May 20 23:08 include
drwxr-xr-x 5 root root 4096 May 20 23:08 jre
drwxr-xr-x 3 root root 4096 May 20 23:08 lib
drwxr-xr-x 4 root root 4096 May 20 23:08 man
lrwxrwxrwx 1 root root 20 Apr 26 11:59 src.zip -> ../openjdk-8/src.zip
lrwxrwxrwx 1 root root 22 Apr 26 11:59 THIRD_PARTY_README -> jre/THIRD_PARTY_README

/usr/lib/jvm/java-8-openjdk-amd64/:
total 20
lrwxrwxrwx 1 root root 22 Apr 26 11:59 ASSEMBLY_EXCEPTION -> jre/ASSEMBLY_EXCEPTION
drwxr-xr-x 2 root root 4096 May 20 23:08 bin
lrwxrwxrwx 1 root root 41 Apr 26 11:59 docs -> ../../../share/doc/openjdk-8-jre-headless
drwxr-xr-x 3 root root 4096 May 20 23:08 include
drwxr-xr-x 5 root root 4096 May 20 23:08 jre
drwxr-xr-x 3 root root 4096 May 20 23:08 lib
drwxr-xr-x 4 root root 4096 May 20 23:08 man
lrwxrwxrwx 1 root root 20 Apr 26 11:59 src.zip -> ../openjdk-8/src.zip
lrwxrwxrwx 1 root root 22 Apr 26 11:59 THIRD_PARTY_README -> jre/THIRD_PARTY_README



openjdk




share|improve this question






















  • What about hidden files. Try ls -a to see If any
    – C0deDaedalus
    May 21 at 4:16










  • What is the output of ls -l /usr/lib/jvm/java-1.8.0-openjdk-amd64/ /usr/lib/jvm/java-8-openjdk-amd64/?
    – ubashu
    May 21 at 4:30














up vote
0
down vote

favorite












I installed openjdk on Lubuntu 18.04 by



$ sudo apt install openjdk-8-jdk


The files and directories it has installed under /usr/lib/jvm/ for openjdk-8 are



$ ls -la /usr/lib/jvm 
total 28
drwxr-xr-x 5 root root 4096 May 20 23:08 .
drwxr-xr-x 109 root root 4096 May 20 22:52 ..
lrwxrwxrwx 1 root root 20 Apr 26 11:59 java-1.8.0-openjdk-amd64 -> java-8-openjdk-amd64
-rw-r--r-- 1 root root 2600 Apr 26 11:59 .java-1.8.0-openjdk-amd64.jinfo
drwxr-xr-x 7 root root 4096 May 20 23:08 java-8-openjdk-amd64


What are the three files and directories for respectively?



In particular, what differences are between the two directories?



$ ls -l /usr/lib/jvm/java-1.8.0-openjdk-amd64/ /usr/lib/jvm/java-8-openjdk-amd64/
/usr/lib/jvm/java-1.8.0-openjdk-amd64/:
total 20
lrwxrwxrwx 1 root root 22 Apr 26 11:59 ASSEMBLY_EXCEPTION -> jre/ASSEMBLY_EXCEPTION
drwxr-xr-x 2 root root 4096 May 20 23:08 bin
lrwxrwxrwx 1 root root 41 Apr 26 11:59 docs -> ../../../share/doc/openjdk-8-jre-headless
drwxr-xr-x 3 root root 4096 May 20 23:08 include
drwxr-xr-x 5 root root 4096 May 20 23:08 jre
drwxr-xr-x 3 root root 4096 May 20 23:08 lib
drwxr-xr-x 4 root root 4096 May 20 23:08 man
lrwxrwxrwx 1 root root 20 Apr 26 11:59 src.zip -> ../openjdk-8/src.zip
lrwxrwxrwx 1 root root 22 Apr 26 11:59 THIRD_PARTY_README -> jre/THIRD_PARTY_README

/usr/lib/jvm/java-8-openjdk-amd64/:
total 20
lrwxrwxrwx 1 root root 22 Apr 26 11:59 ASSEMBLY_EXCEPTION -> jre/ASSEMBLY_EXCEPTION
drwxr-xr-x 2 root root 4096 May 20 23:08 bin
lrwxrwxrwx 1 root root 41 Apr 26 11:59 docs -> ../../../share/doc/openjdk-8-jre-headless
drwxr-xr-x 3 root root 4096 May 20 23:08 include
drwxr-xr-x 5 root root 4096 May 20 23:08 jre
drwxr-xr-x 3 root root 4096 May 20 23:08 lib
drwxr-xr-x 4 root root 4096 May 20 23:08 man
lrwxrwxrwx 1 root root 20 Apr 26 11:59 src.zip -> ../openjdk-8/src.zip
lrwxrwxrwx 1 root root 22 Apr 26 11:59 THIRD_PARTY_README -> jre/THIRD_PARTY_README



openjdk




share|improve this question






















  • What about hidden files. Try ls -a to see If any
    – C0deDaedalus
    May 21 at 4:16










  • What is the output of ls -l /usr/lib/jvm/java-1.8.0-openjdk-amd64/ /usr/lib/jvm/java-8-openjdk-amd64/?
    – ubashu
    May 21 at 4:30












up vote
0
down vote

favorite









up vote
0
down vote

favorite











I installed openjdk on Lubuntu 18.04 by



$ sudo apt install openjdk-8-jdk


The files and directories it has installed under /usr/lib/jvm/ for openjdk-8 are



$ ls -la /usr/lib/jvm 
total 28
drwxr-xr-x 5 root root 4096 May 20 23:08 .
drwxr-xr-x 109 root root 4096 May 20 22:52 ..
lrwxrwxrwx 1 root root 20 Apr 26 11:59 java-1.8.0-openjdk-amd64 -> java-8-openjdk-amd64
-rw-r--r-- 1 root root 2600 Apr 26 11:59 .java-1.8.0-openjdk-amd64.jinfo
drwxr-xr-x 7 root root 4096 May 20 23:08 java-8-openjdk-amd64


What are the three files and directories for respectively?



In particular, what differences are between the two directories?



$ ls -l /usr/lib/jvm/java-1.8.0-openjdk-amd64/ /usr/lib/jvm/java-8-openjdk-amd64/
/usr/lib/jvm/java-1.8.0-openjdk-amd64/:
total 20
lrwxrwxrwx 1 root root 22 Apr 26 11:59 ASSEMBLY_EXCEPTION -> jre/ASSEMBLY_EXCEPTION
drwxr-xr-x 2 root root 4096 May 20 23:08 bin
lrwxrwxrwx 1 root root 41 Apr 26 11:59 docs -> ../../../share/doc/openjdk-8-jre-headless
drwxr-xr-x 3 root root 4096 May 20 23:08 include
drwxr-xr-x 5 root root 4096 May 20 23:08 jre
drwxr-xr-x 3 root root 4096 May 20 23:08 lib
drwxr-xr-x 4 root root 4096 May 20 23:08 man
lrwxrwxrwx 1 root root 20 Apr 26 11:59 src.zip -> ../openjdk-8/src.zip
lrwxrwxrwx 1 root root 22 Apr 26 11:59 THIRD_PARTY_README -> jre/THIRD_PARTY_README

/usr/lib/jvm/java-8-openjdk-amd64/:
total 20
lrwxrwxrwx 1 root root 22 Apr 26 11:59 ASSEMBLY_EXCEPTION -> jre/ASSEMBLY_EXCEPTION
drwxr-xr-x 2 root root 4096 May 20 23:08 bin
lrwxrwxrwx 1 root root 41 Apr 26 11:59 docs -> ../../../share/doc/openjdk-8-jre-headless
drwxr-xr-x 3 root root 4096 May 20 23:08 include
drwxr-xr-x 5 root root 4096 May 20 23:08 jre
drwxr-xr-x 3 root root 4096 May 20 23:08 lib
drwxr-xr-x 4 root root 4096 May 20 23:08 man
lrwxrwxrwx 1 root root 20 Apr 26 11:59 src.zip -> ../openjdk-8/src.zip
lrwxrwxrwx 1 root root 22 Apr 26 11:59 THIRD_PARTY_README -> jre/THIRD_PARTY_README



openjdk




share|improve this question














I installed openjdk on Lubuntu 18.04 by



$ sudo apt install openjdk-8-jdk


The files and directories it has installed under /usr/lib/jvm/ for openjdk-8 are



$ ls -la /usr/lib/jvm 
total 28
drwxr-xr-x 5 root root 4096 May 20 23:08 .
drwxr-xr-x 109 root root 4096 May 20 22:52 ..
lrwxrwxrwx 1 root root 20 Apr 26 11:59 java-1.8.0-openjdk-amd64 -> java-8-openjdk-amd64
-rw-r--r-- 1 root root 2600 Apr 26 11:59 .java-1.8.0-openjdk-amd64.jinfo
drwxr-xr-x 7 root root 4096 May 20 23:08 java-8-openjdk-amd64


What are the three files and directories for respectively?



In particular, what differences are between the two directories?



$ ls -l /usr/lib/jvm/java-1.8.0-openjdk-amd64/ /usr/lib/jvm/java-8-openjdk-amd64/
/usr/lib/jvm/java-1.8.0-openjdk-amd64/:
total 20
lrwxrwxrwx 1 root root 22 Apr 26 11:59 ASSEMBLY_EXCEPTION -> jre/ASSEMBLY_EXCEPTION
drwxr-xr-x 2 root root 4096 May 20 23:08 bin
lrwxrwxrwx 1 root root 41 Apr 26 11:59 docs -> ../../../share/doc/openjdk-8-jre-headless
drwxr-xr-x 3 root root 4096 May 20 23:08 include
drwxr-xr-x 5 root root 4096 May 20 23:08 jre
drwxr-xr-x 3 root root 4096 May 20 23:08 lib
drwxr-xr-x 4 root root 4096 May 20 23:08 man
lrwxrwxrwx 1 root root 20 Apr 26 11:59 src.zip -> ../openjdk-8/src.zip
lrwxrwxrwx 1 root root 22 Apr 26 11:59 THIRD_PARTY_README -> jre/THIRD_PARTY_README

/usr/lib/jvm/java-8-openjdk-amd64/:
total 20
lrwxrwxrwx 1 root root 22 Apr 26 11:59 ASSEMBLY_EXCEPTION -> jre/ASSEMBLY_EXCEPTION
drwxr-xr-x 2 root root 4096 May 20 23:08 bin
lrwxrwxrwx 1 root root 41 Apr 26 11:59 docs -> ../../../share/doc/openjdk-8-jre-headless
drwxr-xr-x 3 root root 4096 May 20 23:08 include
drwxr-xr-x 5 root root 4096 May 20 23:08 jre
drwxr-xr-x 3 root root 4096 May 20 23:08 lib
drwxr-xr-x 4 root root 4096 May 20 23:08 man
lrwxrwxrwx 1 root root 20 Apr 26 11:59 src.zip -> ../openjdk-8/src.zip
lrwxrwxrwx 1 root root 22 Apr 26 11:59 THIRD_PARTY_README -> jre/THIRD_PARTY_README




openjdk





share|improve this question













share|improve this question




share|improve this question








edited May 21 at 11:56

























asked May 21 at 3:16









Tim

7,6284199167




7,6284199167











  • What about hidden files. Try ls -a to see If any
    – C0deDaedalus
    May 21 at 4:16










  • What is the output of ls -l /usr/lib/jvm/java-1.8.0-openjdk-amd64/ /usr/lib/jvm/java-8-openjdk-amd64/?
    – ubashu
    May 21 at 4:30
















  • What about hidden files. Try ls -a to see If any
    – C0deDaedalus
    May 21 at 4:16










  • What is the output of ls -l /usr/lib/jvm/java-1.8.0-openjdk-amd64/ /usr/lib/jvm/java-8-openjdk-amd64/?
    – ubashu
    May 21 at 4:30















What about hidden files. Try ls -a to see If any
– C0deDaedalus
May 21 at 4:16




What about hidden files. Try ls -a to see If any
– C0deDaedalus
May 21 at 4:16












What is the output of ls -l /usr/lib/jvm/java-1.8.0-openjdk-amd64/ /usr/lib/jvm/java-8-openjdk-amd64/?
– ubashu
May 21 at 4:30




What is the output of ls -l /usr/lib/jvm/java-1.8.0-openjdk-amd64/ /usr/lib/jvm/java-8-openjdk-amd64/?
– ubashu
May 21 at 4:30















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