how to read fixed length flat file....

Shell Programming and Scripting
1

Hi Gurus,

Thanks in advance...

I am new to writing shell scripting and help me out reading a flat file with fixed length.

I have a fixed length flat file with storename(lenth 6) , emailaddress(lenth 15), location(10). There is NO delimiters in that file.

Like the following str00001.txt

StoreName emailaddress location

xxxxxxiiiiiiiiii@yahoo.com mmmmm
yyyyy aewwcb@gmail.com lllllllllllllllllllllllll

  •    [EMAIL="zzzz@email.com"]zzzz@email.com[/EMAIL]                    ujeuri

I have to read line by line in the flat file get the email address and location.and set it in a string

  1. Read line by line
  2. Set email address and location in a variable

String email = "iiiiiiiiii@yahoo.com�;
String loc = � mmmmm�;

2

Check out this post: parsing a string in a shell script

3

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$> echo "xxxxxxiiiiiiiiii@yahoo.com mmmmm"| awk '{print substr($1,7)}'
iiiiiiiiii@yahoo.com
$> echo "xxxxxxiiiiiiiiii@yahoo.com mmmmm"| awk '{print $NF}'
mmmmm

# putting it to variables:

String_email=`awk '{print substr($1,7)}' infile`
String_loc=`awk '{print $NF}' infile`

This will give a list of strings in each varaible. Maybe you want to handle it as arrays or read through it via while/read and parse it or just work it completely in awk, idk.