JAVA Uninstall Script

Forgive me if this is answered in another discussion - I have seen similar posts, but nothing that gets to the root of what I am trying to accomplish. I am also, unfortunately not versed in BASH scripting, hence the reason for reaching out...

I am trying to put together a policy that includes a script to completely remove any installed versions of Oracle JAVA - including multiple JDK versions if found.

I am familiar with the official method published here: https://www.java.com/en/download/help/mac_uninstall_java.xml

However, if a machine has multiple JDK versions installed, I need a way to detect those and loop through an uninstall command to remove each.

Does anyone have a script that will accomplish this?

Thanks for any insight that can be provided...

Brian

Page 1 / 1

bump :)

We're going down the path of removing all Oracle Java variants from our environment, with a view to offer something like AdoptOpenJDK. Here's what my colleague has worked on so far. Please test thoroughly as we've not completed our testing. Hope it helps!

#!/bin/bash



# Master script to delete Sun/Oracle Java installations from MacOS X

# Billy Constantine, The University of Adelaide, 2019



# There are a couple of places to find Java and Java-related files in MacOS X:

# - "/Library/Internet Plug-Ins/JavaAppletPlugin.plugin" is the web browser

#   plugin.

# - "/Library/PreferencePanes/JavaControlPanel.prefPane" is the System

#   Preferences applet.

# - "$HOME/Library/Application Support/Oracle/Java" is some kind of installation

#   cache.

# - "/Library/Java/JavaVirtualMachines" contains all installed instances of both

#   the JDK and JRE, both Sun/Oracle and OpenJDK (and others?).

# - there may be other instances through /Library and $HOME/Library, mostly with

#   names that begin with "com.oracle.java"; one sure spot is

#   "/Library/Application Support/Oracle/Java", and it's probably worth checking

#   "/Library/Application Support/Sun/Java" too.

# - /private/var/db/receipts may also have files that begin with

#   "com.oracle.jdk" and/or "com.oracle.jre".



# So:

# - delete the plugin;

# - delete the System Preferences applet;

# - scan all non-system user accounts and delete installation caches;

# - check all installed JVMs and delete the Sun/Oracle ones.



# We'll split this into two parts:

# - we'll combine the deletions of the plugin, applet, and user caches into a

#   single step, since we're unconditionally deleting all those;

# - then we'll check each JVM and (1) leave the "openjdk" ones, (2) delete the

#   "java" ones, and (3) leave any others but flag them to the user.



echo ' '

if [ `/usr/bin/id -u` != 0 ]; then

   # Warn if run as a non-superuser

   echo WARNING

   echo WARNING: not running as superuser

   echo WARNING: system-wide Java cleanup may not be possible

   echo WARNING: try running "sudo $0" instead

   echo WARNING

   echo ' '

fi



# For debugging/review

# Uncomment the second line when ready

RM='echo /bin/rm'

#RM=/bin/rm



# Part one

echo Removing web browser plugin, System Preferences applet, and user installation caches

TO_BE_CHECKED=`/usr/bin/perl -le '@d=("/");setpwent();while(@F=getpwent()){unless(($F[7]=~m@^/(private/)?var@)||($F[8] eq "/usr/bin/false")){push(@d, "$F[7]/");}}endpwent();END{print(join(":", grep { -d } @d));}'`

SUBS="Library/Internet Plug-Ins/JavaAppletPlugin.plugin:Library/PreferencePanes/JavaControlPanel.prefPane:Library/Application Support/Sun/Java:Library/Application Support/Oracle/Java"

OIFS=${IFS}

IFS=':'

for d in ${TO_BE_CHECKED}; do

   for s in ${SUBS}; do

      f="${d}${s}"

      if [ -d "${f}" ]; then

         echo Deleting "${f}"

         echo ${RM} -rf ""${f}"" | /bin/bash -f

      fi

   done

   l="${d}Library"

   for s in `/usr/bin/find "${l}" -name 'com.oracle.java*' -exec echo -n {}: ; 2>/dev/null`; do

      echo Deleting "${s}"

      echo ${RM} -rf ""${s}"" | /bin/bash -f

   done

done

IFS=${OIFS}

for f in `/usr/bin/find /private/var/db/receipts ( -name 'com.oracle.jre*' -o -name 'com.oracle.jdk*' ) 2>/dev/null`; do

   echo Deleting "${f}"

   echo ${RM} -rf ""${f}"" | /bin/bash -f   

done

echo ' '



# Part two

echo Removing non-OpenJDK JVMs

for _jvm in `/usr/bin/find /Library/Java/JavaVirtualMachines -mindepth 1 -maxdepth 1 -type d`; do

   _java=${_jvm}/Contents/Home/bin/java

   if [ -f "${_java}" ]; then

      _type=`"${_java}" -version 2>&1 | /usr/bin/head -1 | /usr/bin/awk '{print $1}'`

      if [ "${_type}" == "openjdk" ]; then

         echo Leaving ${_jvm}

      elif [ "${_type}" == "java" ]; then

         echo Deleting ${_jvm}

         echo ${RM} -fr "${_jvm}" | /bin/bash -f

      else

         echo Unknown JVM designation "${_type}" for ${_jvm}, leaving

      fi

   fi

done

David - thanks a ton. I will give this a go. Really appreciate you sharing!

Brian

Update - Script works great! Thanks again for your help!

Brian

#!/bin/bash



# Master script to delete Sun/Oracle Java installations from MacOS X

# Billy Constantine, The University of Adelaide, 2019



# There are a couple of places to find Java and Java-related files in MacOS X:

# - "/Library/Internet Plug-Ins/JavaAppletPlugin.plugin" is the web browser

#   plugin.

# - "/Library/PreferencePanes/JavaControlPanel.prefPane" is the System

#   Preferences applet.

# - "$HOME/Library/Application Support/Oracle/Java" is some kind of installation

#   cache.

# - "/Library/Java/JavaVirtualMachines" contains all installed instances of both

#   the JDK and JRE, both Sun/Oracle and OpenJDK (and others?).

# - there may be other instances through /Library and $HOME/Library, mostly with

#   names that begin with "com.oracle.java"; one sure spot is

#   "/Library/Application Support/Oracle/Java", and it's probably worth checking

#   "/Library/Application Support/Sun/Java" too.

# - /private/var/db/receipts may also have files that begin with

#   "com.oracle.jdk" and/or "com.oracle.jre".



# So:

# - delete the plugin;

# - delete the System Preferences applet;

# - scan all non-system user accounts and delete installation caches;

# - check all installed JVMs and delete the Sun/Oracle ones.



# We'll split this into two parts:

# - we'll combine the deletions of the plugin, applet, and user caches into a

#   single step, since we're unconditionally deleting all those;

# - then we'll check each JVM and (1) leave the "openjdk" ones, (2) delete the

#   "java" ones, and (3) leave any others but flag them to the user.



echo ' '

if [ `/usr/bin/id -u` != 0 ]; then

   # Warn if run as a non-superuser

   echo WARNING

   echo WARNING: not running as superuser

   echo WARNING: system-wide Java cleanup may not be possible

   echo WARNING: try running "sudo $0" instead

   echo WARNING

   echo ' '

fi



# For debugging/review

# Uncomment the second line when ready

RM='echo /bin/rm'

#RM=/bin/rm



# Part one

echo Removing web browser plugin, System Preferences applet, and user installation caches

TO_BE_CHECKED=`/usr/bin/perl -le '@d=("/");setpwent();while(@F=getpwent()){unless(($F[7]=~m@^/(private/)?var@)||($F[8] eq "/usr/bin/false")){push(@d, "$F[7]/");}}endpwent();END{print(join(":", grep { -d } @d));}'`

SUBS="Library/Internet Plug-Ins/JavaAppletPlugin.plugin:Library/PreferencePanes/JavaControlPanel.prefPane:Library/Application Support/Sun/Java:Library/Application Support/Oracle/Java"

OIFS=${IFS}

IFS=':'

for d in ${TO_BE_CHECKED}; do

   for s in ${SUBS}; do

      f="${d}${s}"

      if [ -d "${f}" ]; then

         echo Deleting "${f}"

         echo ${RM} -rf ""${f}"" | /bin/bash -f

      fi

   done

   l="${d}Library"

   for s in `/usr/bin/find "${l}" -name 'com.oracle.java*' -exec echo -n {}: ; 2>/dev/null`; do

      echo Deleting "${s}"

      echo ${RM} -rf ""${s}"" | /bin/bash -f

   done

done

IFS=${OIFS}

for f in `/usr/bin/find /private/var/db/receipts ( -name 'com.oracle.jre*' -o -name 'com.oracle.jdk*' ) 2>/dev/null`; do

   echo Deleting "${f}"

   echo ${RM} -rf ""${f}"" | /bin/bash -f   

done

echo ' '



# Part two

echo Removing non-OpenJDK JVMs

for _jvm in `/usr/bin/find /Library/Java/JavaVirtualMachines -mindepth 1 -maxdepth 1 -type d`; do

   _java=${_jvm}/Contents/Home/bin/java

   if [ -f "${_java}" ]; then

      _type=`"${_java}" -version 2>&1 | /usr/bin/head -1 | /usr/bin/awk '{print $1}'`

      if [ "${_type}" == "openjdk" ]; then

         echo Leaving ${_jvm}

      elif [ "${_type}" == "java" ]; then

         echo Deleting ${_jvm}

         echo ${RM} -fr "${_jvm}" | /bin/bash -f

      else

         echo Unknown JVM designation "${_type}" for ${_jvm}, leaving

      fi

   fi

done

@davidhiggs Do you happen to have an updated version on this script? I tried it as is on Ventura and got the following:

sudo sh jamf-remove-Java.sh 

Password:

 

Removing web browser plugin, System Preferences applet, and user installation caches

find: -exec: no terminating ";" or "+"

find: -exec: no terminating ";" or "+"

find: -exec: no terminating ";" or "+"

jamf-remove-Java.sh: command substitution: line 74: syntax error near unexpected token `('

jamf-remove-Java.sh: command substitution: line 74: `/usr/bin/find /private/var/db/receipts ( -name 'com.oracle.jre*' -o -name 'com.oracle.jdk*' ) 2>/dev/null'

 

Removing non-OpenJDK JVMs

I thought I would ask before spending a lot of time trying to debug.

@davidhiggs Do you happen to have an updated version on this script? I tried it as is on Ventura and got the following:

sudo sh jamf-remove-Java.sh 

Password:

 

Removing web browser plugin, System Preferences applet, and user installation caches

find: -exec: no terminating ";" or "+"

find: -exec: no terminating ";" or "+"

find: -exec: no terminating ";" or "+"

jamf-remove-Java.sh: command substitution: line 74: syntax error near unexpected token `('

jamf-remove-Java.sh: command substitution: line 74: `/usr/bin/find /private/var/db/receipts ( -name 'com.oracle.jre*' -o -name 'com.oracle.jdk*' ) 2>/dev/null'

 

Removing non-OpenJDK JVMs

I thought I would ask before spending a lot of time trying to debug.

@chelm I corrected the syntax errors and tested, this worked for me

#!/bin/bash



# Master script to delete Sun/Oracle Java installations from MacOS X

# Billy Constantine, The University of Adelaide, 2019



# There are a couple of places to find Java and Java-related files in MacOS X:

# - "/Library/Internet Plug-Ins/JavaAppletPlugin.plugin" is the web browser

#   plugin.

# - "/Library/PreferencePanes/JavaControlPanel.prefPane" is the System

#   Preferences applet.

# - "$HOME/Library/Application Support/Oracle/Java" is some kind of installation

#   cache.

# - "/Library/Java/JavaVirtualMachines" contains all installed instances of both

#   the JDK and JRE, both Sun/Oracle and OpenJDK (and others?).

# - there may be other instances through /Library and $HOME/Library, mostly with

#   names that begin with "com.oracle.java"; one sure spot is

#   "/Library/Application Support/Oracle/Java", and it's probably worth checking

#   "/Library/Application Support/Sun/Java" too.

# - /private/var/db/receipts may also have files that begin with

#   "com.oracle.jdk" and/or "com.oracle.jre".



# So:

# - delete the plugin;

# - delete the System Preferences applet;

# - scan all non-system user accounts and delete installation caches;

# - check all installed JVMs and delete the Sun/Oracle ones.



# We'll split this into two parts:

# - we'll combine the deletions of the plugin, applet, and user caches into a

#   single step, since we're unconditionally deleting all those;

# - then we'll check each JVM and (1) leave the "openjdk" ones, (2) delete the

#   "java" ones, and (3) leave any others but flag them to the user.



echo ' '

if [ `/usr/bin/id -u` != 0 ]; then

   # Warn if run as a non-superuser

   echo WARNING

   echo WARNING: not running as superuser

   echo WARNING: system-wide Java cleanup may not be possible

   echo WARNING: try running "sudo $0" instead

   echo WARNING

   echo ' '

fi



# For debugging/review

# Uncomment the second line when ready

RM='echo /bin/rm'

#RM=/bin/rm



# Part one

echo Removing web browser plugin, System Preferences applet, and user installation caches

TO_BE_CHECKED=`/usr/bin/perl -le '@d=("/");setpwent();while(@F=getpwent()){unless(($F[7]=~m@^/(private/)?var@)||($F[8] eq "/usr/bin/false")){push(@d, "$F[7]/");}}endpwent();END{print(join(":", grep { -d } @d));}'`

SUBS="Library/Internet Plug-Ins/JavaAppletPlugin.plugin:Library/PreferencePanes/JavaControlPanel.prefPane:Library/Application Support/Sun/Java:Library/Application Support/Oracle/Java"

OIFS=${IFS}

IFS=':'

for d in ${TO_BE_CHECKED}; do

   for s in ${SUBS}; do

      f="${d}${s}"

      if [ -d "${f}" ]; then

         echo Deleting "${f}"

         echo ${RM} -rf ""${f}"" | /bin/bash -f

      fi

   done

   l="${d}Library"

   for s in `/usr/bin/find "${l}" -name 'com.oracle.java*' -exec echo -n {}: 2>/dev/null`; do

      echo Deleting "${s}"

      echo ${RM} -rf ""${s}"" | /bin/bash -f

   done

done

IFS=${OIFS}

for f in `/usr/bin/find /private/var/db/receipts -name 'com.oracle.jre*' -o -name 'com.oracle.jdk*' 2>/dev/null`; do

   echo Deleting "${f}"

   echo ${RM} -rf ""${f}"" | /bin/bash -f   

done

echo ' '



# Part two

echo Removing non-OpenJDK JVMs

for _jvm in `/usr/bin/find /Library/Java/JavaVirtualMachines -mindepth 1 -maxdepth 1 -type d`; do

   _java=${_jvm}/Contents/Home/bin/java

   if [ -f "${_java}" ]; then

      _type=`"${_java}" -version 2>&1 | /usr/bin/head -1 | /usr/bin/awk '{print $1}'`

      if [ "${_type}" == "openjdk" ]; then

         echo Leaving ${_jvm}

      elif [ "${_type}" == "java" ]; then

         echo Deleting ${_jvm}

         echo ${RM} -fr "${_jvm}" | /bin/bash -f

      else

         echo Unknown JVM designation "${_type}" for ${_jvm}, leaving

      fi

   fi

done

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