Installation Of HDB and TDB in Linux

# 9 years ago
bchitalia2	Hi All While executing the step 8 of Installation Manual for HDB and TDB, following errors are coming: 1. Could not find or load main class HdbArchiver.HdbArchiver 2. Could not find or load main class TdbArchiver.TdbArchiver Any help will be appreciated. Thanks Balkrishna Chitalia Edited 9 years ago

# 9 years ago
Pritesh	Hi! I am also encountering the same problem as mentioned above while installing the HDB and TDB. Thanks, Pritesh

# 9 years ago
sergi_rubio	Hi, This is because the launcher script assumes that you have an /etc/bashrc where your CLASSPATH environment variable is initialized. You can solve the issue editing the $ARCHIVING_ROOT/device/linux/Archiver script and replacing this line: `source /etc/bashrc` by these lines (it will add all archiving .jar files to classpath): ARCHIVING_ROOT=/wherever/you/installed/archiving for file in `find $ARCHIVING_ROOT/lib/java -maxdepth 1 -iname ".jar"` ; do CLASSPATH=$file:$CLASSPATH; done Srj Keep on dancing, http://www.tango-controls.org/resources/howto/how-fandango/ Edited 9 years ago

# 9 years ago

sergi_rubio

Hi,

This is because the launcher script assumes that you have an /etc/bashrc where your CLASSPATH environment variable is initialized.

You can solve the issue editing the $ARCHIVING_ROOT/device/linux/*Archiver script and replacing this line:

source /etc/bashrc

by these lines (it will add all archiving .jar files to classpath):


ARCHIVING_ROOT=/wherever/you/installed/archiving

for file in `find $ARCHIVING_ROOT/lib/java -maxdepth 1 -iname "*.jar"` ; do
  CLASSPATH=$file:$CLASSPATH;
done

Srj

Keep on dancing,

http://www.tango-controls.org/resources/howto/how-fandango/

Edited 9 years ago

# 9 years ago
bchitalia2	Hi Thanks a lot Sergi. It worked. Thanks Balkrishna

# 9 years ago
Philippe	Hi Sergi, we experienced a similar issue under ubuntu 14.04 LTS. We solved this by replacing dash by bash like this: `echo 'dash dash/sh boolean false' \| sudo debconf-set-selections sudo dpkg-reconfigure -p critical dash sudo ln -s /etc/bash.bashrc /etc/bashrc` I can not actually check if this solve also our issue, but if then, I understand the solution you gave here is the one which is recommanded ? - Philippe

# 9 years ago

Philippe

Hi Sergi,
we experienced a similar issue under ubuntu 14.04 LTS. We solved this by replacing dash by bash like this:

echo 'dash dash/sh boolean false' | sudo debconf-set-selections
sudo dpkg-reconfigure -p critical dash
sudo ln -s /etc/bash.bashrc /etc/bashrc

I can not actually check if this solve also our issue, but if then, I understand the solution you gave here is the one which is recommanded ?

- Philippe

# 9 years ago
sergi_rubio	Well, basically the problem was that ARCHIVING_ROOT and CLASSPATH environment variables must be properly defined before launching the devices. In our case we prefer to not set the variables in bashrc as we may use different classpaths for different applications; so it is up to you whether you want to use /etc/bash.bashrc, /etc/bashrc or directly define the variables in the launcher script as we do. In my opinion the best would be to have sort of `source ../etc/archiving.rc` file to you load your environment. Keep on dancing, http://www.tango-controls.org/resources/howto/how-fandango/

# 9 years ago

sergi_rubio

Well, basically the problem was that ARCHIVING_ROOT and CLASSPATH environment variables must be properly defined before launching the devices.

In our case we prefer to not set the variables in bashrc as we may use different classpaths for different applications; so it is up to you whether you want to use /etc/bash.bashrc, /etc/bashrc or directly define the variables in the launcher script as we do.

In my opinion the best would be to have sort of

source ../etc/archiving.rc

file to you load your environment.

Keep on dancing,

http://www.tango-controls.org/resources/howto/how-fandango/

# 9 years ago
Philippe	Ok, thanks. In fact, the complete message we got was the following : `shell terminal$./HdbArchiver 01 ./HdbArchiver: 8: ./HdbArchiver: source: not found ./HdbArchiver: 19: ./HdbArchiver: [[: not found ./HdbArchiver: 27: ./HdbArchiver: [[: not found Error: Could not find or load main class HdbArchiver.HdbArchiver` If I remember well, the solution of dash was because of the first 3 lines. It solves the last one which seems to be a side effect. - Philippe

# 9 years ago

Philippe

Ok, thanks.
In fact, the complete message we got was the following :

shell terminal$./HdbArchiver  01

./HdbArchiver: 8: ./HdbArchiver: source: not found
./HdbArchiver: 19: ./HdbArchiver: [[: not found
./HdbArchiver: 27: ./HdbArchiver: [[: not found
Error: Could not find or load main class HdbArchiver.HdbArchiver

If I remember well, the solution of dash was because of the first 3 lines. It solves the last one which seems to be a side effect.

- Philippe