[olug] Unix Tip: EDITING OF LARGE FILES

[Unix Guru Universe]

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			      UNIX GURU UNIVERSE 
			         UNIX HOT TIP

			Unix Tip 2159 - November 29, 2002

		    http://www.ugu.com/sui/ugu/show?tip.today

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EDITING OF LARGE FILES

Ever failed to open a very large 
file for editing in vi. Just try 
this tip:

Suppose you want to make changes 
in top 500 lines of a 100 line file 
abc.txt.

tail +500 abc.txt > tail.txt
head -500 abc.txt > head.txt

Edit file head.txt by opening in 
a vi editor.

Now append file tail.txt to 
head.txt by:

cat tail.txt >> head.txt
mv head.txt > abc.txt
rm head.txt tail.txt


This tip generously supported by: akash at cadence.com




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