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Full Discussion: fnsplit, Extract filename from path
Top Forums Shell Programming and Scripting fnsplit, Extract filename from path Post 302346514 by Festus Hagen on Saturday 22nd of August 2009 04:10:03 PM
Old 08-22-2009
fnsplit, Extract filename from path
Hi all,

I know this has been covered a lot, I have been searching and reading for hours on the subject, however so far I have been unsuccessful at accomplishing the goal using sed.

I know this can be done with parameter expansion (Thanks cfajohnson for a great explanation of parameter expansion).
Code:
# getfn
str='./filename.ext'
fn=${str##*/}

However the goal is sed'ucation!

I am here...
Code:
# getfn
str='./filename.ext'
fn=$(echo ${str} | sed 's,/.*/,,')

Then I combine that with
Code:
# stripext
str='./filename.ext'
fn=$(echo ${str} | sed 's,\(.*\)\..*,\1,')

Like
Code:
# getpurefn
 str='./filename.ext'
fn=$(echo ${str} | sed 's,/.*/,,;s,\(.*\)\..*,\1,')

For the ultimate goal of the pure 'filename'...

All works good except when the path begins with './'..

What would be the resolution??

I'm not getting a good understanding of RE's yet so an explanation of how the expression works would be awesome as well! (This is my first attempt at RE's)

Thanks all.

-Enjoy
fh : )_~
 

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LEARN ABOUT DEBIAN

nps2gps

NPS2GPS(1)						      General Commands Manual							NPS2GPS(1)

NAME

       nps2gps - convert nucleotide-protein sets to ASN.1 genomic product sets

SYNOPSIS

       nps2gps [-] [-D] [-F] [-G str] [-L] [-N] [-P] [-Q] [-R] [-T] [-U] [-f str] [-i filename] [-o filename] [-p path] [-r path] [-x str]

DESCRIPTION

       nps2gps converts NCBI Bioseq-sets from simple nucleotide-protein sets to full genomic product sets complete with mRNA transcripts, which it
       outputs as text ASN.1.

OPTIONS

       A summary of options is included below.

       -      Print usage message

       -D     RefSeq mRNA Titles

       -F     Map by Feature ID

       -G str General ID database name

       -L     Lock components in advance

       -N     Promote Non-coding RNAs

       -P     mRNA ID from Protein

       -Q     Special mRNA titles

       -R     Enable Remote fetching from ID

       -T     Map by Transcript ID

       -U     Remove Unnecessary gene cross-references

       -f str Substring filter

       -i filename
	      Single input file (default = stdin)

       -o filename
	      Single output file (default = stdout)

       -p path
	      Path to files for batch conversion

       -r path
	      Path for results of batch conversion

       -x str File selection suffix for batch conversion (default = .ent)

AUTHOR

       The National Center for Biotechnology Information.

SEE ALSO

       asn2asn(1), asn2ff(1), asn2gb(1), asn2xml(1), asndhuff(1).

NCBI Tools User's Manual					    2012-06-24								NPS2GPS(1)
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