sed replace with fixed length

McLan · #1 (**permalink**) 05-14-2008

Quote:

I have template file with content as below:

Code:

$ cat template
s.noName

Quote:

I want to use this template file to generate the data file using sed

Code:

$ sed "s/s.no/1/" template > out
$ sed "s/s.no/100/" template >>out

Quote:

now the content of the out file is :

Code:

$ cat out
1Name
100Name

Quote:

I would like to see the content of the file as below:

Code:

1  Name
100Name

Quote:

The maximum S.No I am expecting is 999, that is for S.no I want to use 3 digits. if the S.no is only one digit I wan to have 2 spaces after the S.no, if the S.no is with 2 digits then I want to have one space after the S.no
How can I modify the sed command to achieve the desired result?

era · #2 (**permalink**) 05-14-2008

Code:

sed "s/s.no/1  /" template

McLan · #3 (**permalink**) 05-14-2008

Quote:

Thanks for the solution.
If I have to do this for some 100 number of records from input file , and the input file contains the data with s.no.
I will be getting the s.no into variable in the loop and I would like use sed in the loop as below

Code:

sed "s/s.no/$sno/" template >>out

Quote:

I will not be sure for every record what is the length of the $sno, it could be 1 or 2 or 3.

How to handle in this situation?

era · #4 (**permalink**) 05-14-2008

Use printf to create the sed script maybe? Or replace everything with three spaces and then overwrite as many as necessary?

Franklin52 · #5 (**permalink**) 05-14-2008

Quote:

I will not be sure for every record what is the length of the $sno, it could be 1 or 2 or 3.
How to handle in this situation?

Do you get the numbers from a file?

Regards

Other UNIX.COM Threads You Might Find Helpful
Thread	Thread Starter	Forum	Replies	Last Post
What the command to find out the record length of a fixed length file?	tranq01	UNIX for Dummies Questions & Answers	3	10-19-2007 11:16 AM
Fixed length (Fill out)	peterk	Shell Programming and Scripting	3	09-28-2007 08:04 AM
Awk with fixed length files	c2b2	Shell Programming and Scripting	7	01-06-2007 08:57 AM
fixed length fields in awk	roopla	Shell Programming and Scripting	2	11-13-2006 05:12 PM
creating a fixed length output from a variable length input	r1500	Shell Programming and Scripting	2	12-03-2003 09:09 AM

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode