Replace char with sed

Dear all,

I've a folder with some files inside. Synthax: field.field.field.ext

But I would like to replace the . by _ or space.
We give me this command: sed -e 's/./_/g'

But I'm not an expert in script. But this will replace the point of my extensions too...

How can I do to replace only the point in the name and not the point of the extension in all files in one times?

Mouglou

let "A" be the line "field.field.field.ext"
then

rev A | sed 's/\./#/' | sed 's/\./_/g' | sed 's/#/\./' |rev >B

should leave "B" as "field_field_field.ext"

Quote:

---

Dear all,

I've a folder with some files inside. Syntax: field.field.field.ext

But I would like to replace the . by _ or space.
We give me this command: sed -e 's/./_/g'

But I'm not an expert in script. But this will replace the point of my extensions too...

How can I do to replace only the point in the name and not the point of the extension in all files in one times?

Mouglou

---

I beleive that you are asking how to rename files within a directory and not names in a file?? If that is the case, then use the script:

Code:

---

#!/bin/bash

for fullfilename in "$@"; do
    ext="${fullfilename##*\.}"
    name="${fullfilename%\.${ext}}"
    mv "${fullfilename}" "${name//./_}.${ext}"
done

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Which is run as:

Code:

---

cd directorylocation
scriptname *

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Be sure to chmod the script to 755 before attempting to run the script.

I tried and got a similar style to tpl. Its like that ,

sed 's/\./_/g' inputfile | rev | sed 's/\_/\./' | rev > outputfile

Sed is really great.

Doing renaming of files within a directory ....

Code:

---

bash$ function testing
> {
>    for fullfilename in "$@"; do
>        ext="${fullfilename##*\.}"
>        name="${fullfilename%\.${ext}}"
>        echo mv "${fullfilename}" "${name//./_}.${ext}"
>    done
> }
bash$ testing field.field.field.ext name.segment.here.with.an.ext
mv field.field.field.ext field_field_field.ext
mv name.segment.here.with.an.ext name_segment_here_with_an.ext
bash$

---

I like to use a function like this to test a script. As you can see that the "mv" (remame) is just being echoed.