Re: [tlug] sorting data set -Help

["Keith Bawden" <keith@example.com>]

On 12/6/06, John Joseph <johnjoseph.e@example.com> wrote:
> I am a new linux user. Would like to sort the data set by selecting
> rows containing different set of first few letters or words. Example
> of data set is given below. Wondering how do I select and write
> those rows statrting with "$TKACC"; "$TKGPP" and "$TKATT".
> My data file is quite large size.
> ==============================================
> $TKATT,-0307P, 0051R,284.2T,00*27
> $TKACC, 1551600,     -28.8966,     -84.0000,04C6,057E,2945*43
> $TKGPP,011547.00,3529.377014,N,13547.150285,E,2,08,1.1,8.885,M,,M,4,0672,1*52

# SNIP

I'm not sure if I have entirely understood your question, but here goes...

Do you want one file with the data sorted by the contents of the first
column or do you want three separates files?

If you want one large file then my previous post will be the way to
go. If you want three seperate files this may be what you are looking
for:

cat original_data.txt | grep '^\$TKACC' | sort > TKACC_data.txt
cat original_data.txt | grep '^\$TKATT' | sort > TKATT_data.txt
cat original_data.txt | grep '^\$TKGPP' | sort > TKGPP_data.txt

Check the man page for sort for any special sorting requirements you may have.

Regards, Keith