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LINUX-SED question

Comment:

How can I edit a file doing the following: 1- join all lines that are not empty 2- change the empty line to contain just a semicolon ; as an SQL statement terminator example select a,b_ col1 from bla select d, prod_i dent from prod where p rod_ident = 10 to be select a,b_col1 from bla ; select d, prod_ident from prod where prod_ident = 10 ; Thanks!

Name: nails
Date: May 1, 2009 at 23:18:50 Pacific

Reply:

This works for only the GNU sed (i.e. Linux): sed -e 's/^$/;/g' \ -n -e ' H $ { x s/\n//g s/;/\n;\n/g p } ' datafile Since the entire file is read into sed's buffer space, this script works on small files.

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