[olug] Unix Tip: ONE STEP AT A TIME WITH !!

[Unix Guru Universe]

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			      UNIX GURU UNIVERSE 
			         UNIX HOT TIP

			Unix Tip 2023 - July 16, 2003

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

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ONE STEP AT A TIME WITH !!

For example using C shell I want 
to edit a handful of files that 
contain the string "ProcessInput" 
in my current directory.

Step 1: 
Find the files which uses "ProcessInput"

% grep "ProcessInput" *.c
a.c:ProcessInput ( int a )
b.c:Description : ProcessInput is used to process the input
given by the user
b.c:Call ProcessInput to perform ...
c.c:val = ProcessInput(2) ;
c.c:val = ProcessInput(3) ;

Step 2:
Extract the filenames on the left.
$!! | awk -F: '{print $1}' 
a.c
b.c
b.c
c.c
c.c

step 3:
Remove the duplicates
!! | sort -u 

Step 4: 
Now edit it !
vi `!!`

which runs vi `grep "ProcessInput" *.c | awk -F: '{print $1}'
|  sort -u`


This tip generously supported by: desikann at future.futsoft.com




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