Bulk rename files - remove space

Question

I have hundreds of files in a folder named transactions 1.csv, transactions 2.csv, transactions 3.csv etc

How do i remove the space in the file names, so they become transactions1.csv,transactions2.csv,transactions3.csv etc

Any help is appreciated?

Answer 1

With bash (and probably others) you can use ${f// /} to remove all spaces from $f:

for f in *.csv; do
    mv "$f" "${f// /}"
done

Also have a look at rename

rename ' ' '' *

but this only removes the first space, so it has to be applied several times.