Fix alfresco share online preview

Here is what worked for me:

1. Install swftools

sudo apt-get install swftools

2. locate pdf2swf (usually in /usr/local/bin/pdf2swf)

which pdf2swf

3. open your /opt/alfresco/tomcat/shared/classes/alfresco-global.properties

vi /opt/alfresco/tomcat/shared/classes/alfresco-global.properties

edit your default setting to something like this:

ooo.enabled=true
ooo.exe=/usr/bin/soffice
jodconverter.enabled=true
jodconverter.officeHome=/usr/lib/openoffice/program
jodconverter.portNumbers=8101
swf.exe=/usr/local/bin/pdf2swf

save and then restart the alfresco:

alfresco.sh restart