[Cialug] List file types in a directory

[Daniel A. Ramaley]

Like this?

$ ls | perl -ne 'print "$1\n" if /\.([^.]*?)$/;'

That prints the file extension for files that have one. For files that 
don't have an extension, nothing is printed.

On Thursday 08 March 2007 16:39, Kendall Bailey wrote:
>Not simple enough for a single command line, but here's a python
>script which will play the role of awk in the pipeline shown
>
>import sys,re
>for i in sys.stdin :
>   if re.match(".*\.([^.])+",i.strip()) : print
> i.strip().split(".")[-1]
>
>I'm sure it would be a one liner in perl...
>
>On 3/8/07, David Champion <dchampion at visionary.com> wrote:
>> Both of those methods will display files with no periods, i.e. put a
>> file in there called "test" and it will echo out "test".
>>
>> -dc
>>
>> Tim Wilson wrote:
>> > ls -1 | awk -F'.' '{print $NF}' | sort | uniq
>> > or sort -u instead of sort | uniq
>> >
>> > I use awk because you could have foo.bar.jpg.  Using NF in awk
>> > will guarantee you'll get jpg.
>> >
>> > On 3/8/07, Chris Freeman <cwfreeman at gmail.com> wrote:
>> >> Assuming only one '.' per filename:
>> >>
>> >> ls -1 | cut -f2 -d. | sort -u
>> >>
>> >> Chris
>> >>
>> >> On 3/8/07, Daniel Juliano < dan at danandlaurajuliano.com> wrote:
>> >> > So, how would I get a list of file types for all files in a
>> >> > directory? Let's say I've got the following:
>> >> > test1.txt
>> >> > test2.txt
>> >> > test3.jpg
>> >> >
>> >> > I'd like something similar to:
>> >> > .txt
>> >> > .jpg
>> >> >
>> >> > Any ideas?
>> >> >
>> >> >
>> >> > _______________________________________________
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>> >> > Cialug at cialug.org
>> >> > http://cialug.org/mailman/listinfo/cialug
>> >>
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>
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Dan Ramaley                            Dial Center 118, Drake University
Network Programmer/Analyst             2407 Carpenter Ave
+1 515 271-4540                        Des Moines IA 50311 USA