Thanks, but that doesn't work. First, what do I pass to cut? Since each
file has a different number of words (I apologise if that wasn't obvious) I
can't use -f or -b because the field and byte offsets are different. Using
basename to remove "_default.mp3" and "cut -d_ -f6" I get some of the PIDs,
but I also get random words, like "Mars" and "Earthquake" since those words
are in the original filenames. What next?
On 7/29/2015 4:30 AM, Geoff Shang wrote:
On Wed, 29 Jul 2015, Tony Baechler wrote:
What I'm trying to do is extract the BBC PID from the downloaded files.
It's a lower case alphanumeric string which starts with a letter and is
eight characters. In my case, the first letter is always "b" or "p," so
if I could use something like grep to just extract the first lower case
letter followed by a number up to the next underscore, that would be
good. I don't think grep will just print a matching phrase, only the
matching line. Here are some example filenames:
5_live_Science_-_Coding_and_Computers_b062dj5j_default.mp3
Witness_-_The_Sinking_of_the_USS_Indianapolis_p02wdykn_default.mp3
Discovery_-_A_Scientific_View_of_Agriculture_p0053gbd_default.mp3
Click_-_05_10_2010_p00b18gp_default.mp3
You can use basename to get rid of the end.
$ basename Click_-_05_10_2010_p00b18gp_default.mp3 _default.mp3
Click_-_05_10_2010_p00b18gp
You could then use cut with this youtput to get what ou want.
HTH,
Geoff.
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