How to rename multiple file extensions at the same time?

Question

I already referred this post and post

I have my filenames like as shown below (1 set contains 3 related files). In my directory, I have 40 set of files (meaning 120 files). All the 40 sets have 3 files with same file extension

Set 1

Test_t5.version9.info.gz
Test_t5.version9.dose.vcf.gz.tbi
Test_t5.version9.dose.vcf.gz

Set 2

Test_t5.version12.info.gz
Test_t5.version12.dose.vcf.gz.tbi
Test_t5.version12.dose.vcf.gz

Only the version number in file changes across different sets.

Now, I would like to rename my files like as shown below

Set 1

Test_t5.version9.info.gz
Test_t5.version9.dose.vcf.gz.tbi
Test_t5.version9.dose.vcf.bgz            #see the change here from `.gz to .bgz`

Set 2

Test_t5.version12.info.gz
Test_t5.version12.dose.vcf.gz.tbi
Test_t5.version12.dose.vcf.bgz            #see the change here from `.gz to .bgz`

I tried the below but guess am making mistake while executing the command in the shell.

 rename 's/dose.vcf.gz/dose.vcf.bgz/' Test_t5.version*.dose.vcf.gz

Basically modify the file extension for only one file in each of the set. You don't have to worry about Set 1 or Set 2. That was for you to understand that how our data is grouped.

Can you help please?

Answer 1

It looks like you are just wanting to do:

for file in *.vcf.gz; do mv "$file" "${file%.gz}.bgz"; done