Renaming files

tekmann33 · 05-19-2009, 04:48 PM

I have a long list of jpg files that people have submitted:

cat.jpg
dog.jpg
bird.jpg
etc....

I need to append a two letter code in front of each file to designate where it came from:

wacat.jpg
wadog.jpg
wabird.jpg
etc...

Can I do this with 'sed' ? The only time I have ever used sed was to use it for substitution for the contents of a file, and not the file itself.

Tinkster · 05-19-2009, 05:00 PM

man rename

Cheers,
Tink

ghostdog74 · 05-19-2009, 07:15 PM

Quote:

Originally Posted by tekmann33

I have a long list of jpg files that people have submitted:

cat.jpg
dog.jpg
bird.jpg
etc....

I need to append a two letter code in front of each file to designate where it came from:

wacat.jpg
wadog.jpg
wabird.jpg
etc...

Can I do this with 'sed' ? The only time I have ever used sed was to use it for substitution for the contents of a file, and not the file itself.

if you have Python

Code:

#!/usr/bin/env python
import os
for files in os.listdir("."):
    if os.path.isfile(files) and files.endswith(".jpg"):
        os.rename(files,"wc"+files)

burninGpi · 05-19-2009, 08:50 PM

Shell script:

Code:

#!/bin/sh
for file in *.jpg
do
   mv "$file" "wa$file"
done

tekmann33 · 05-22-2009, 09:57 AM

Quote:

Originally Posted by burninGpi

Shell script:

Code:

#!/bin/sh
for file in *.jpg
do
   mv "$file" "wa$file"
done

What would the login look like if I already had files that had "wa" appended to them and some of them without and I only want to change the filename that do not have "wa". Also, it would do the same for both jpeg and jpg files. For instance:

cat.jpg
wadog.jpg
bird.jpg
wafish.jpg

So, I guess I want this in pseudocode:

for every file that has the extension "jpg" or "jpeg"
if file does not already have "wa" in front of file

tekmann33 · 05-22-2009, 10:01 AM

Quote:

Originally Posted by burninGpi

Shell script:

Code:

#!/bin/sh
for file in *.jpg
do
   mv "$file" "wa$file"
done

What would the logic look like if I already had files that had "wa" appended to them and some of them without "wa" and I only want to change the filenames that do not have "wa"? Also, there is a possiblity that I might have jpegs submitted instead of jpgs. For instance, my directory might look like this:

cat.jpg
wadog.jpg
bird.jpg
wafish.jpeg
ferrit.jpeg

So, I guess what I want in pseudocode is this:

Code:

for every file that has the extension "jpg" or "jpeg"
       if file does not already have "wa" at beginning of the file
               change "file" to "wafile"
        else
               skip file

colucix · 05-22-2009, 10:08 AM

Code:

for file in $(find .  \( -iname \*.jpg -o -iname \*.jpeg \) ! -name wa\*)
do
  mv ${file##./} wa${file##./}
done