SQL query in unix shell script - unix

Question

I have written a code that will give me the required output after executing it.
Below is the code:
#!/bin/ksh
sqlplus / << !EOF!
set verify off
set heading off
set pagesize 0
set feedback off;
select * from account where account_name='23553558101';
exit;
!EOF!`
The problem is that I'm getting all the non-required stuffs too, but I need the output only not other things along with that.
Below is the output I'm getting:
$ ./sqltest
SQL*Plus: Release 10.2.0.1.0 - Production on Mon May 29 17:32:52 2017
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bit Production
With the Partitioning, OLAP, Data Mining Scoring Engine and Real Application Testing options
17:32:52 OPS$SP1ITA1B#SVITPRD1 > 17:32:52 OPS$SP1ITA1B#SVITPRD1 > 17:32:52 OPS$SP1ITA1B#SVITPRD1 > 17:32:52 OPS$SP1ITA1B#SVITPRD1 > 17:32:52 OPS$SP1ITA1B#SVITPRD1 > 17:32:52 OPS$SP1ITA1B#SVITPRD1 > 56566309 23553558101 20-05-2017 05:41:00 57194135 20000184 64,56
20-05-2017 00:00:00 340393871 338845845 500 0
0
17:32:52 OPS$SP1ITA1B#SVITPRD1 > 17:32:52 OPS$SP1ITA1B#SVITPRD1 > Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bit Production
With the Partitioning, OLAP, Data Mining Scoring Engine and Real Application Testing options

Answer 1

When you are using sqlplus in a shell script is better to log in using the silent mode "sqlplus -s" to supress the login messages and also to remove the sql prompt "sql >".
Further more, you need to change some variables like:
heading - it will not display the head of the query result(the name of the columns to be more precise)
set heading off
feedback - it will not return the number of rows after a query select.
set feedback off
verify - is used to display the values in case you have substitution variables
set verify off
The columns presented above are ON by default so it is better to switch them off if you want a clean display (just the result) and also it is mandatory in my opionion if the result of your sqlplus will be collected by a shell variable.
You can check the manual for more information about sqlplus system variables:
https://docs.oracle.com/cd/E11882_01/server.112/e16604/ch_twelve040.htm#SQPUG060