Shell Programming and Scripting

Hi, Input file is following line.

Code:

 
STG,12345,000,999,'PQR, 2345,000,999,'XYZ,7890,000,999,

and required output is

Code:

 
STG,12345,000,999,'
PQR, 2345,000,999,'
XYZ,7890,000,999,

sometimes we do receive files in proper output format. In that case if we execute code then it adds one more line after ' char and file becomes following which is incorrect.

Code:

 
STG,12345,000,999,'
 
PQR, 2345,000,999,'
 
XYZ,7890,000,999,

OK, what I need is if you take for example three lines of such a file in proper output format and run it through od -c

It is quite easy: if an line break follows the single quote the script should leave the single quote alone, otherwise translate it. There is no other possibility to discern between "correct" and "not correct" single quotes (or files containing them).

This means that in the following (constructed) counter-example, any script so far would fail - not because the scripts are wrong, but because you didn't specify exactly enough what you want to have:

Code:

abc'def'ghi
jkl'mno'
pqr

Output according to your rules:

Code:

abc'
def'
ghi
jkl'
mno'

pqr

But what you probably would want to have is a file without the blank line, right?

So, there (enter a literal <ENTER> instead of "^M": in vi, press <CTRL>-<V> in input mode, then hit <ENTER>. You will notice the character look like "^M", but is counted as a single character):

Code:

sed 's/'\(.\)/'^M\1/g' /path/to/input > /path/to/output

I hope this helps.

bakunin