CODEWITHSUNDEEP
regexunixsed
Zoltan Ersek
Zoltan Ersek

Reputation: 775

Insert a word with sed into a text file

I have a text file and I want to insert a word like house before every word that begins with a lower-case letter in a file, using sed. I've tried this but it's not working:

sed "s/(^[a-z]+| [a-z]+)/house (^[a-z]+| [a-z]+)/g" textfile.

Upvotes: 3

Views: 1421

Answers (2)

perreal
perreal

Reputation: 98078

POSIX friendly version:

sed -e 's/\([^[:alpha:]]\)\([a-z][[:alpha:]]*\)/\1house \2/g' 
    -e 's/^\([a-z]\)/house \1/' input

Upvotes: 1

Kent
Kent

Reputation: 195199

I got this line, is it ok for you?

sed -r 's/\b[a-z]\w*\b/HOUSE &/g' file

with example:

kent$ echo "yes No yES NO y_e_s _no"|sed -r 's/\b[a-z]\w*\b/HOUSE &/g'
HOUSE yes No HOUSE yES NO HOUSE y_e_s _no

Upvotes: 3

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