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Generalized:-
awk -F'[\|,]' ' { f=3; s=(NF/2)+2; while(s<=NF) { printf "%s|%s|%s|%s\n",$1,$2,$f,$s; f++;s++; } } ' infile

Try this, it will check only the files having permissions and we can also avoid the errors.

find . -type f -perm 666 -exec grep "pattern" {} \;

Change the permission, as what ever you want.

Hi.

Not sure why you are still using echo, when it should work fine using printf!:

#!/bin/ksh

export delm=`printf "\t"`

cat <<!
SELECT
COALESCE(TRIM(CAST(col1 AS VARCHAR(10))),'')...

Hi.

Along this line, here is something similar to an exercise I usually had students do:
#!/usr/bin/env bash

# @(#) s1 Demonstrate cat copying a system executable file.

# Utility functions:...

Because it usually doesn't need to care about line boundaries. Stopping in the middle of a line won't make it "binary". (though cat without parameters ought to be binary-safe.) What blocks it does...

Not so much "fine" as "negligible". Correct. It's a bad habit in general -- test data tends to be small so the problem isn't apparent, only when you make it do real work will you run into trouble.

3 usefull links about sed:
- sed - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Sed)
- sed_tutorial (http://www.selectorweb.com/sed_tutorial.html)
- Using sed...

HI,

sort filename | uniq -c | awk ' $1 > 1 { print $2}'

Thanks
Penchal