removing the filename extension Post: 302501486

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Top Forums Shell Programming and Scripting removing the filename extension Post 302501486 by alister on Thursday 3rd of March 2011 04:43:35 PM

03-03-2011

Registered User

Quote:

Originally Posted by in2nix4life

for x in *;do mv $x $(echo ${x%*.*});done

There's no need for the echo command substitution and the first asterisk in your parameter substitution is meaningless since it's a shortest match (% instead of %%). Also, the filenames in question have spaces (perhaps that info was added after you had read the post), so the expansions need to be double quoted to protect them from field splitting.

A slightly simpler version of your approach:

Code:

for x in *; do
    mv "$x" "${x%.*}"
done

---------- Post updated at 04:43 PM ---------- Previous update was at 04:40 PM ----------

Quote:

Originally Posted by daflore

Is there an easy way to strip off a filename's extension?
...<snip>...
Thanks. I have a directory full of filenames that need to be manipulated in this way.

If it's possible that striping the file extension from file1 can match an existing file, file2, and if you don't want file2 clobbered, you'll want to test for the existence of file2 before doing the mv.

Regards,
Alister

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gpiv_hdf2piv

GPIV_HDF2PIV(1) 					      General Commands Manual						   GPIV_HDF2PIV(1)

NAME

       gpiv_hdf2piv - Converts HDF5 PIV-data to ASCII data.

SYNOPSIS

       gpiv_hdf2piv [-e] [-h | --help] [-p | --print] [-v | --version] filename

DESCRIPTION

       gpiv_hdf2piv  converts  a  HDF5	formatted file filename.hdf, containing PIV-data, PIV derived data, like vorticities, strain etc to (ASCII
       formatted) filename.piv., filename.vor, filename.sstr, filename.nstr and, eventually, image(s) to (PNG formatted) filename.png  files.  The
       parameters that have been used for the analysis and post processing are written to filename.par

       This  program  does  not  use  the parameter resources from libgpiv. The parameters may be defined by the command line options as explained
       below.

Options
       -e     Exclude PIV data and data from post-processes. Only convert image data.

       -h | --help
	      On-line help.

       -p | --print
	      Prints parameters, command line options and input and output filenames to stdout. The output may be used as parameters of fasty  for
	      future use by re-directing stdout to fasty.par.

       -v | --version
	      Print version information on standard output, then exits successfully.

       filename
	      Full input file name, hdf formatted (including .hdf extension)

       SEE ALSO
	      gpivtools

AUTHOR

       Gerber Van der Graaf

								  19 Januari 2005						   GPIV_HDF2PIV(1)

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