variables in shell script

[rrrkrishnan]

I am using this command in a shell script to read the value for these variables from a file.

IFS=" "
tail -1l $HOME/extr_prd | read extr_prd_begin_dt extr_prd_end_dt

Then I use these variables in insert stmts like ,
insert into tbl
(begin_dt,
end_dt)
values
($extr_prd_begin_dt ,
$extr_prd_end_dt);

Now when I execute the shell script by just specifying the name of the shell script at shell prompt like in $shell_script_name.sh, it works fine.
But when I use nohup, like in
nohup script_name > log_file_name &
the variable substitution doesn't happen in the insert stmt.

Any help with this is much appreciated.

Thanks!!!

 

[tikual]

What is your output of 'tail -1 .....'. It is not work in my unix box.

tikual

 

[rrrkrishnan]

This is the contents of the extr_prd file

EXTRACT PERIOD BEGIN DATE EXTRACT PERIOD END DATE
------------------------- -----------------------
'1900-01-01' '2003-08-31'

So I use tail -1 command to read the last line to get the values into these variables.

Thanks!!!