On 2020/03/03 15:45, Hans-Bernhard Bröker wrote:
Am 04.03.2020 um 00:25 schrieb L A Walsh:
On 2020/02/28 04:38, Fergus Daly wrote:
I am almost certain that the command
$ rename "anything" "AnyThing" *.ext
would alter the string from lc to uc as shown, anywhere it occurred in
any filename in *.ext in the current directory.
isn't that they same as "mv anything.xxx Anything.xxx" ?
No. For three reasons:
*) it's .ext, not .xxx :-)
*) it will find and replace 'anything' _anywhere_in_ the filename, not
just in the basename.
I'm confused about your terminology. If you type 'man basename', you'll
see something that is essentially this:
basename = [optional directory name '/'] basename [. extension (or
suffix)]
You said we are only working in 'cwd' so there is no directory name.
You said all of the filenames must match '*.ext'. The only part
left after the extension, ".ext", is removed is the basename. So while
your replacement can match _anywhere_in_ the filename, the filename and
basename
are the same after it matched the listed 'extension', no?
Second, rename doesn't replace the string '_anywhere_' in the filename,
but only
the first occurance:
rename anything AnyThing *.ext
ll *.ext
-rw-rw-rw-+ 1 0 Mar 3 19:24 oneAnyThingtwo.ext
-rw-rw-rw-+ 1 0 Mar 3 19:25 oneAnyThingtwoanythingthree.ext
While bash only works on 1 file at a time,
it can replace 1 or multiple occurances:
for f in *.ext;do
mv "$f" "${f//anything/AnyThing}"
done
ll *.ext
-rw-rw-rw-+ 1 0 Mar 3 19:24 oneAnyThingtwo.ext
-rw-rw-rw-+ 1 0 Mar 3 19:25 oneAnyThingtwoAnyThingthree.ext
If one wants to replace 1 occurance in multiple files, I would
still use 'mmv', as rename will overwrite files if there is a collision
whereas 'mmv' won't.
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