On Mon, 2008-07-21 at 13:54 +0000, Alex Bennee wrote:
> Hi,
> 
> I'm having trouble working out the correct way to fix this. On an
> upgrade to opennms with a new package I've built it fails as JAVA_HOME
> is not set in /etc/default/opennms.
> 
> The postinst script should work, although the current logic prefers
> runjava -s over manually hacking the JAVA_HOME:
> 
>       if [ -x /usr/lib/jvm/java-6-openjdk/bin/java ]; then
>               /usr/share/opennms/bin/runjava -q -S 
> /usr/lib/jvm/java-6-openjdk/bin/java || :
>               (grep -v ^JAVA_HOME /etc/default/opennms ; echo 
> 'JAVA_HOME=/usr/lib/jvm/java-6-openjdk') > /etc/default/opennms.new
>               mv /etc/default/opennms.new /etc/default/opennms
> 

Ok, I'm obviously missing some subtle bash-ism, because the grep magic
is run but the echo of "JAVA_HOME" only occurs if there is a comment
line:

[EMAIL PROTECTED]:~# cat /etc/default/opennms
[EMAIL PROTECTED]:~# sh +x ./opennms-common.postinst configure
+ [ -x /usr/lib/jvm/java-6-openjdk/bin/java ]
+ /usr/share/opennms/bin/runjava -q -S /usr/lib/jvm/java-6-openjdk/bin/java
+ grep -v ^JAVA_HOME /etc/default/opennms
+ mv /etc/default/opennms.new /etc/default/opennms
+ exit 0
[EMAIL PROTECTED]:~# echo "# hello hello" > /etc/default/opennms
[EMAIL PROTECTED]:~# sh +x ./opennms-common.postinst configure
+ [ -x /usr/lib/jvm/java-6-openjdk/bin/java ]
+ /usr/share/opennms/bin/runjava -q -S /usr/lib/jvm/java-6-openjdk/bin/java
+ grep -v ^JAVA_HOME /etc/default/opennms
+ echo JAVA_HOME=/usr/lib/jvm/java-6-openjdk
+ mv /etc/default/opennms.new /etc/default/opennms
+ exit 0
[EMAIL PROTECTED]:~# cat /etc/default/opennms
# hello hello
JAVA_HOME=/usr/lib/jvm/java-6-openjdk
[EMAIL PROTECTED]:~# echo "JAVA_HOME=/usr/lib/jvm/java-6-openjdk" > 
/etc/default/opennms
[EMAIL PROTECTED]:~# sh +x ./opennms-common.postinst configure
+ [ -x /usr/lib/jvm/java-6-openjdk/bin/java ]
+ /usr/share/opennms/bin/runjava -q -S /usr/lib/jvm/java-6-openjdk/bin/java
+ grep -v ^JAVA_HOME /etc/default/opennms
+ mv /etc/default/opennms.new /etc/default/opennms
+ exit 0
[EMAIL PROTECTED]:~# cat /etc/default/opennms
[EMAIL PROTECTED]:~# 

Or is this simply a bug in bash?

-- 
Alex Bennee, Software Engineer
Does the same as the system call of that name. If you don't know what it
does, don't worry about it. -- Larry Wall in the perl man page regarding
chroot(2)


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