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adding characters end of line where line begins with..

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# 1  
Old 12-06-2010
adding characters end of line where line begins with..
Hi all,

using VI, can anyone tell me how to add some characters onto the end of a line where the line begins with certain charactars eg

a,b,c,.......,
r,s,t,........,
a,b,c,.......,


all lines in the above example starting with a,b,c, I want to add an x at the end of the line so the line file would be

a,b,c,.......,x
r,s,t,........,
a,b,c,.......,x

any help appreciated!
Regards
Satnam
# 2  
Old 12-06-2010
Code:
ESCAPE
:
1,$s/\(^a.*,$\)/\1x

Last edited by cabrao; 12-06-2010 at 11:57 AM..
This User Gave Thanks to cabrao For This Post:
jim mcnamara
# 3  
Old 12-06-2010
not searching on a,b,c
HI, thanks for coming back to me..i noticed that your suggested command does not filter out on the lines starting with a,b,c? which is what i need it to do?
cheers
Sat
# 4  
Old 12-06-2010
Code:
ESC
:%s/^a,b,c.*/&x/

% means "in the whole file" ... just a lazy typing for 1,$ Smilie
but the substitution will occure only in the lines matching the pattern defined between the first / / since this pattern match the whole line that start with a,b,c you can then use & to refer to that match before you add the expected x this avoid \( \) \1 grouping stuff
Last edited by ctsgnb; 12-06-2010 at 12:18 PM..
# 5  
Old 12-06-2010
@satnamx:

Previous command was updated, please have a look at it Smilie
# 6  
Old 12-06-2010
@cabrao :
it works also without trailing / ?
# 7  
Old 12-06-2010
smashed it!

much obliged Smilie
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