Appending a counting suffix to input files with increment of 1 1

[bazil2]

(Elementary user)

I would like to make a script that when executed renames the files in a directory by adding a number that increments by the value of '1' with each file it processes.

For example:

My_first_file.jpg
Another_file.jpg
ABC_file.jpg

Will be renamed to:

My_first_file_001.jpg
Another_file_002.jpg
ABC_file_003.jpg

Can anyone give me any pointers, I would like to use a shell script if possible?

Best regards

 

[Salem]

$ j=1
$ for i in *.jpg ; do 
  f1=`basename $i .jpg`
  f2=`printf "%s_%03d.jpg" $f1 $j`
  echo mv $i $f2
  ((j++))
done
mv ABC_file.jpg ABC_file_001.jpg
mv Another_file.jpg Another_file_002.jpg
mv My_first_file.jpg My_first_file_003.jpg

This works if you have a bash shell. The printf command is GNU specific, so you might need some other approach.



--
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.

 

[Annihilannic]

Actually, printf is fairly ubiquitous, so it should work on most flavour of Unix. In bash it's a shell builtin, but in other cases (HP-UX, ...?) there is a /usr/bin/printf binary to save the day.

Annihilannic.

 

[stefanwagner]

You have to mask $i, $f1, $f2 because they may contain whitespace:

for i in *.jpg 
do
    f1=$(basename "$i" .jpg)
    f2=$(printf "%s_%03d.jpg" "$f1" $j)
    mv "$i" "$f2" 
    ((j++))
done

Backticks are deprecated, so use $(...) instead. It's better readable, writeable and nestable.

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