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Full Discussion: parse a mixed alphanumeric string from within a string
Top Forums Shell Programming and Scripting parse a mixed alphanumeric string from within a string Post 302610781 by agama on Wednesday 21st of March 2012 08:13:26 PM
Old 03-21-2012
This is my initial thought (-r for GNU like seds, -E for BSD based seds), but I don't think it will fly on Solaris:

Code:
echo "Thisis__the FileName_S1234_ToParse.txt" |sed -E 's/(.*_)([sS][0-9]{3,4})(_.*)/\2/'



This might have an unseen flaw, but it works for the few cases I tried and I think it will work on Solaris too:

Code:
echo "Thisis__the FileName_S1234_ToParse.txt" |sed  's/.*__//; s/.*_S/S/; s/.*_s/s/; s/_.*//'



It allows the first set of double underbars to be followed by an s or S which is why the first substitute is there. It assumes that there are only the two other underbars in the name.

Hope it helps.
 

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