Programming Forums - Please Help Newbie

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Wejmok Chorg

Jul 5th, 2005 12:14 PM

Please Help Newbie

Hello,

I have a log file, which I want to use as a word list. Problem is, there's no space between the words and the numbers to which the words are linked.

For instance, I need to change

called20:12,18

to

called 20:12,18

by adding a space between the words and the numbers.

sed's info file tells me that replace-strings get interpreted litterally on the right hand side.

Thus, as info telle me, sed s/[a-zA-Z][0-9]/[a-z][A-Z]\ \[0-9]/g testfile produces "calle[a-z][A-Z] [0-9]0:12,18"

Can someone tell me how I can search my file for all instances of letter-then-number, and replace them with letter-then-space-then-number?

Thank you very much.

DaWei

Jul 5th, 2005 1:28 PM

Just search for a subpattern containing one or more alphabetics, such as ([a-zA-Z]+), then replace it with the subpattern plus a space. That presumes that your example always represents your data.

DaWei

Jul 5th, 2005 3:35 PM

Here's a copy of a CLI screen

C:\DOCUME~1\David\Desktop>type filter.txt

s/\([a-zA-Z]*\)/\1 /



C:\DOCUME~1\David\Desktop>type sedtest.txt

caller20:20:20

called1:30:03



C:\DOCUME~1\David\Desktop>ssed -f filter.txt sedtest.txt > results.txt



C:\DOCUME~1\David\Desktop>type results.txt

caller 20:20:20

called 1:30:03



C:\DOCUME~1\David\Desktop>

Ooble

Jul 5th, 2005 4:19 PM

Just to clarify:

When you want to keep certain sections of the document you're running the regex on, you enclose them in parentheses (brackets - ( and ) ), as DaWei shows. You then use these by using "\1", "\2" etc. in the replace string.

jim mcnamara

Jul 7th, 2005 9:31 AM

Well, there's tr as well.

cat filename | tr -s ';' ' ' | tr -s ',' ' ' > newfilename

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