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add a fixed text to the beginning of every line

Posted on 2008-06-25
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Last Modified: 2013-12-13
I have a file like this:

yellow
brown
red

How do I add with Perl or PHP (command-line in Windows) - with the fastest execution time - the fixed text "100" to the beginning of every line, obtaining the following?

100yellow
100brown
100red
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Question by:lucavilla
[X]
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4 Comments
 
LVL 84

Assisted Solution

by:ozo
ozo earned 249 total points
ID: 21868339
perl -i.bak -pe "s/^/100" file
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Author Comment

by:lucavilla
ID: 21869485
ozo, I get this error:

c:\Perl\bin\perl -i.bak -pe "s/^/100" input.txt
Substitution replacement not terminated at -e line 1.
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LVL 39

Accepted Solution

by:
Adam314 earned 251 total points
ID: 21869948
There is a missing / at the end.  It should be:
    c:\Perl\bin\perl -i.bak -pe "s/^/100/" input.txt
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Author Closing Comment

by:lucavilla
ID: 31470690
Thanks!
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