Ubuntu – How to rename files in a directory by adding a value to current name

I suppose the following could work. Assuming the prefix of your filenames is "DSC" you can use the following command in the terminal (untested!)

cd /path/to/photos
rename 's/DSC/'$RANDOM'/' *.jpg

This uses the perl rename command to match regular expressions and replace them. In this case, we are substituting "DSC" with a random number in the filename for all .jpg files. Change the "DSC" to whatever your photos' prefix is.

another method (also untested) is with a bash script:

#!/bin/bash
for f in *.jpg; do
  mv "$f" $RANDOM-"$f"
done

This should work for you:

sed 's/"//g' files.csv | while IFS=, read orig new; do mv "$orig" "$new"; done 

Explanation:

• sed 's/"//g' files.csv : remove the quotes
• IFS=, : split the input on ,
• while read orig new; do ... done : This will read each input line, split it on the value of $IFS (here a comma) and save the 1st field as $orig and the rest as $new.
• mv "$orig" "$new" : this will rename the files as requested.

If your file only contains file names (like orig.jpg) and no paths (not /home/take2/orig.jpg or similar), the command above will only affect files in your current directory. So, you need to open a terminal, cd to the target directory and run it there.

Test first:

To test this, you can do a dry run first by printing the commands that will be run without actually executing them:

sed 's/"//g' files.csv | while IFS=, read orig new; do echo mv "$orig" "$new"; done