java on linux, is it installed or not?

laucian · 12-06-2007, 05:21 AM

so here is my problem..

Code:

mfc-falter:/usr/java # rpm -i j2re-1_4_2_16-linux-i586.rpm
        package j2re-1.4.2_16-fcs is already installed
mfc-falter:/usr/java # rpm -e j2re-1_4_2_16-linux-i586.rpm
error: package j2re-1_4_2_16-linux-i586.rpm is not installed

for some reason i need to remove my current JRE and install JRE 1.4.x

can some help me with this one..i tried to remove everything via yast..
when search the string "jre" comes to match. i just want to remove everythin belonging to jre and install the jre 1.4.x

thanks

reddazz · 12-06-2007, 05:24 AM

Try

Code:

#rpm -e j2re

You should not include the rpm extension when uninstalling.

laucian · 12-06-2007, 05:33 AM

Code:

mfc-falter:/usr/java # rpm -e j2re
touch: cannot touch `/usr/java/j2re1.4.2_16/lib/rt.pack': No such file or directory
touch: cannot touch `/usr/java/j2re1.4.2_16/lib/jsse.pack': No such file or directory
touch: cannot touch `/usr/java/j2re1.4.2_16/lib/charsets.pack': No such file or directory
touch: cannot touch `/usr/java/j2re1.4.2_16/lib/ext/localedata.pack': No such file or directory
touch: cannot touch `/usr/java/j2re1.4.2_16/lib/plugin.pack': No such file or directory
touch: cannot touch `/usr/java/j2re1.4.2_16/javaws/javaws.pack': No such file or directory
touch: cannot touch `/usr/java/j2re1.4.2_16/lib/unpack': No such file or directory
error: %preun(j2re-1.4.2_16-fcs.i586) scriptlet failed, exit status 1

and this means?
another question, how can i check which versions are installed on the system?

colucix · 12-06-2007, 05:39 AM

Quote:

Originally Posted by laucian

another question, how can i check which versions are installed on the system?

Code:

java --version

laucian · 12-06-2007, 05:41 AM

Quote:

mfc-falter:/usr/java # java --version
bash: java: command not found

so this 100% there is java installed..
or might be some other reason?

reddazz · 12-06-2007, 05:44 AM

Something went wrong when rpm was trying to run one of the pre uninstall scripts. Try the following

Code:

#rpm -e --noscripts j2re

This may leave some files in /usr/java/j2re1.4.2_16 so you have to delete this directory yourself if you no longer need it.

reddazz · 12-06-2007, 05:47 AM

Quote:

Originally Posted by laucian

so this 100% there is java installed..
or might be some other reason?

to check the version of java thats installed on your system, try

Code:

/usr/java/j2re1.4.2_16/bin/java --version

jlliagre · 12-06-2007, 06:01 AM

Quote:

Originally Posted by reddazz

to check the version of java thats installed on your system, try

Code:

/usr/java/j2re1.4.2_16/bin/java --version

That should be "-version" (one dash only).

Given the path and if the installation isn't broken, the only possible answer will be version 1.4.2_16.

reddazz · 12-06-2007, 06:27 AM

Quote:

That should be "-version" (one dash only).

You are right there. I make this error quite a lot because I am used to the GNU tools.

laucian · 12-06-2007, 07:29 AM

thank you all..
i solved my problem as i used yast to remove every single java package and reinstall only the one i needed..

installing software on linux is always a chaos for me..does anyone know a good guide or tutorial explaining in detail "how to install software" on linux machines..?