CODEWITHSUNDEEP
ubuntushdash-shell
sop
sop

Reputation: 3625

Ubuntu script to rename all images in folder

I am using the following code to rename all the images in the current folder:

a=1
for i in *.jpg; do
  new=$(printf "%04d.jpg" ${a}); #04 pad to length of 4
  mv ${i} ${new};
  a=$((a+1));
done

But I have met a problem: some of the images were overwritten, because I use it after I have added more images in the folder. Is there a way to fix this? I thought to add an if (name_exists) then next_name, but I am new to scripts. Any help, please?

Upvotes: 4

Views: 793

Answers (2)

clt60
clt60

Reputation: 63922

You can use:

#!/bin/bash
glob="[0-9][0-9][0-9][0-9].jpg"
last=$(find . -maxdepth 1 -name "$glob" -print |sort -gr |grep -Pom1 '\d{4}') # or  |grep -om1 '[0-9][0-9]*')
last=${last:-0}
while IFS= read -d $'\0' -r image
do
    let last++
    echo mv "$image" "$(printf "%04s" $last ).jpg"
done < <(find . -maxdepth 1 -name \*.jpg -a -not -name "$glob" -print0)

where:

  • 1st find finds the last used number
  • the while read reads the output from the
  • 2nd find what finds all .jpg what have different name as NNNN.jpg
  • increment and rename

You can imprpve this

  • search other types of images (not only jpg)
  • change the script to case insensitive
  • the above will fail if the image count raises above 9999... so...

The script is in dry mode, remove the echo when satisfied

EDIT

dash version:

glob="[0-9][0-9][0-9][0-9].jpg"
last=$(find . -maxdepth 1 -name "$glob" -print |sort -gr |grep -Pom1 '\d{4}') # or  |grep -om1 '[0-9][0-9]*')
last=${last:-0}
for image in *.jpg
do
    echo "$image" | grep -q "^$glob$" && continue
    #last=$((last+1))  #with leading zeroes, the numbers treated as octal... fails for 08 and such
    last=$(expr $last + 1)
    echo mv "$image" "$(printf "%04d" $last ).jpg"
done

Upvotes: 2

Satyajit R
Satyajit R

Reputation: 72

add the following to your script

a=1
for i in *.jpg; do
    new=$(printf "%04d.jpg" ${a});
    while [ -f ${new} ]
    do
       a=$((a+1));
       new=$(printf "%04d.jpg" ${a});
    done
    mv ${i} ${new};
    a=$((a+1));
done

if you are not too particular about the numbered names. You could use this:

if [ -f ${new} ]
then
    new=$(printf "%04d_%s.jpg" ${a} $(date +'%H_%M_%S'))
fi

instead of while.

Upvotes: 0

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