Replace char with sed

[Mouglou]

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

[tpl]

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"

[alf55]

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:

#!/bin/bash

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

Which is run as:

cd directorylocation
scriptname *

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

[sreek]

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.

[alf55]

Doing renaming of files within a directory ....

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.