Regular expressions is a pretty big topic.  It's not super easy like globing (like the * you've been using in bash) which you can get the idea from the 544 page book ( http://www.amazon.com/Mastering-Regular-Expressions-Jeffrey-Friedl/dp/0596528124/ ) that can be bought on regular expressions.  The equivalent book on globing would be a pamphlet.

That being said, the basics aren't too hard to learn, but you have to keep in mind that they are fairly different, and don't always act like what you would think.

There are a ton of howtos out there and they take a lot of different approaches to explaining thing, I would just search google for them until you find one that speaks to you.

Brian Cluff

On 01/30/2016 11:54 AM, Michael wrote:
thank you Brian. Does anyone happen to know of a perl regexr list. I found one but am not sure if it is right: http://www.cs.tut.fi/~jkorpela/perl/regexp.html

On Sat, Jan 30, 2016 at 11:43 AM, Brian Cluff <brian@snaptek.com> wrote:
You can't rename files that way.  The * on the command line gets turned into real file names by bash before they are ever given to the mv command so you are tell the command line to consist of any files with a : followed by any files with an = or -.
At best your command will error out, at worst it will overwrite an existing file.
What you are needing is a program that can take a pattern and rename files with a different pattern.  There are 2 that I've used, mmv and rename.  Of the 2, you probably have rename on your system already since it gets pulled in with PERL.  If not, just install the rename package.

With rename all you have to do is:
rename 's/:/-/' *

That will use a regular expression to change all the files in the current directory that contain a : in their name to the same name with a - replacing the :.

Be very very careful with the rename command, it can and will clobber every file that it touches before you know it just because you got a single character out of place.
When in doubt add the -n option so that it will tell you what it's going to do without actually doing it.  Then if everything looks good, run the command again without the -n to actually make the changes.

Brian Cluff



On 01/30/2016 08:29 AM, Michael wrote:
I'm sure that will fix it but what am I doing wrong in my attempts to rename them?

$ mv *:* *=*
mv: target ‘*=*’ is not a directory
$ mv *:* *-*
mv: target ‘darktable-1:9Download’ is not a directory
$ mv *:* ./*-*
mv: target ‘./darktable-1:9Download’ is not a directory


On Sat, Jan 30, 2016 at 10:29 AM, Matt Graham <mhgraham@crow202.org> wrote:
On Fri, Jan 29, 2016 at 6:45 PM, Michael <bmike1@gmail.com> wrote:
the filesystem is probably FAT because it is a thumb drive....
rsync: mkstemp "/media/bmike1/RedSanDisk/Documents/Education/Darktable/.darktable-1:10WaterLilyEdit.CccL3o" failed: Invalid argument (22)

It is not possible to have a ':' character in a filename on a FAT-based filesystem.  This is because that character was used to denote which disk drive a file was on back in the DOS days... "C:\junk\stuff.txt" and so forth.

I am not sure what these hidden files contain, or whether they're actually important.  You can pass the "--exclude *\:*" option to rsync to tell it to not try to transfer files that contain ':' characters, which may help.

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