Date and version should be generating by

Question

Hello All,
We are also using with IBM websphere portal in our environment.
But this is a Linux question than a product.
For our routine deployment we are doing export/import.
I want to run export by script for both source and target.
Regardless of how many time I run the same script I want export file will be generated by name,date and version #.
First time script will create source_fulltest20091215_1.xml,
if user runs scripts again it will create the name as source_fulltest20091215_2.xml.
Third time script will generates file name as source_fulltest20091215_3.xml
Please notice name of the file its increment by number.
Below is a general format of the script,
if I run exactly same script it will create the file called ‘source_fulltest20091215_1.xml”.
./xmlaccess.sh -in exportBase.xml -out source_fulltest20091215_1.xml -url http://hostname:port#/wps/config -user svc_wpsadmin -password 'helloworld'.
I want date and version should be generating by auto script.
Thanks

Answer 1

Review the output formatting of the date(1) command:
$ man dateand use it to compose part of the filename:
fn=fulltest$(date '+%Y%m%d%H%M')The version number is a bit tricky, there are so many choices about how to do it. One way, assuming you just want the filenames to be unique is to:
if [ -f ${fn} ]; then
   seqno=1
   while [ -f ${fn}_${seqno} ]; do
        seqno=$(expr ${seqno} + 1)
   done
   fn="${fn}_${seqno}"
fiThere are more succinct ways of expressing this, but this way will work everywhere.