Rename multiple files based on pattern in Unix

Question

There are multiple files in a directory that begin with prefix fgh, for example:

fghfilea
fghfileb
fghfilec

I want to rename a

Answer 1

Here's a way to do it using command-line Groovy:

groovy -e 'new File(".").eachFileMatch(~/fgh.*/) {it.renameTo(it.name.replaceFirst("fgh", "jkl"))}'