Gson convertion between Object & String

Following JAVA function can be used to convert "Response" object to "String".
Gson library need to add to project.

Gson gson=new Gson();
Response response=new Response();
response.setStatus("OK");
response.setMessage("Test JSON");
String rtnStr=gson.toJson(response);
return rtnStr;
   
This code snip convert "String" to "Response" object.
  
Gson gson=new Gson();
Response r=gson.fromJson(str, Response.class);

Unzip batch of files in Linux

Following command can be used to unzip batch of files in Linux.

gzip -d *.gz

Rename batch of files in Linux

Following awk script can be used to rename list of files.
Here, it will rename ".txt.pdf" files into ".txt" files.

for k in *.pdf; 
do mv $k `echo $k | sed 's/txt.pdf/txt/g'`; 
done

Copy files from one location to another in Linux

Following "scp" command can be used to copy files from one location to another.

scp * sujith@192.168.1.153:/apps/sujith/data

SQL concat string in informix

Suppose database contains mobile_no field which has records like "0715355403".....

If you want to remove front "0" and add "94", you can use the following SQL command.

select  "94"||mobile_no[2,10] from sms_request

This is can used in SQL where clause, too.