CODEWITHSUNDEEP
regexsed
Djagu
Djagu

Reputation: 161

Replace regex does not work with sed

I am trying to replace the number at the end of this : version=12 containted in the file config.file

Here is my script :

nbr=13
sed -re "s/version=\d+/$nbr/g" config.file

The regex does not seem to detect the number.

Have someone any ideas why ?

Upvotes: 1

Views: 46

Answers (1)

Wiktor Stribiżew
Wiktor Stribiżew

Reputation: 626690

You can use

nbr=13
sed -re "s/(version=)[0-9]+/\1$nbr/g" config.file

See the online demo

Even if you are using an ERE POSIX regex (enabled with -r), you still cannot use PCRE like \d digit pattern.

Also, I added a capturing group around (version=) to be able to restore it in the replacement part with a \1 backreference.

Upvotes: 3

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