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find and replace

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  #1  
Old March 4th, 2005, 04:21 PM
caspercoco caspercoco is offline
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Exclamation find and replace
Hello,

I would like some advice re the following.

Suppose I have a file that contains many rows of data. The following line appears approx 1000 times in the file.

1125 0.944 200.00

I would like the line to read (for all 1000 lines)

House 1125 0.944 200.00

The only constant value in the line is the 0.944 value.

Thanks in advance.
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Old March 5th, 2005, 02:19 PM
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christo christo is offline
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if your file is called values.txt, then you just need to do this at your command line:


perl -pi -e 's/^/House /' values.txt



hope that helps


christo
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Old March 7th, 2005, 06:45 AM
zlutovsky zlutovsky is offline
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Quote:
Originally Posted by christo
if your file is called values.txt, then you just need to do this at your command line:


perl -pi -e 's/^/House /' values.txt



hope that helps


christo



If you have no perl, write

sed 's/^/House /' values.txt

Regards
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Old March 7th, 2005, 08:17 AM
guggach guggach is offline
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christo + zlutovsky

your approach will change
Quote:
1125 0.944 200.00
1125 XXXX 200.00

to
Quote:
House 1125 0.944 200.00
House 1125 XXXX 200.00

is that expected ? i read this:
Quote:
The only constant value in the line is the 0.944 value.

insert 'home' to all lines containing '0.944' in the 2.nd field.
this thread is duplicated, i wrote a sed-cmd in other one
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