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Top Forums Shell Programming and Scripting PS3 select when wrong input given Post 302729039 by ningy on Friday 9th of November 2012 01:49:45 AM
Old 11-09-2012
PS3 select when wrong input given

Hi All

I am using the below code to chose a file to view :

Code:
PS3="Select file to view : "
select FILE in `ls`  QUIT
do
   if [ -e $FILE ] ; then
     clear
     cat  $FILE
  else
  break
  fi
  REPLY=''
done

Everything works fine as long as I am giving the correct choice .

But when i give a wrong option it hangs .
How to include a check so that if a wrong option is entered , throw a message saying to enter a valid choice.
 

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DCSORT(1)					      DICOM PS3 - Make sorted list of images						 DCSORT(1)

NAME
dcsort - ACR/NEMA DICOM PS3 ... DICOM PS3 - Make sorted list of images SYNOPSIS
dcsort " inputfile1 [ inputfile2 ... ]" [ -v|verbose ] [ -vv|veryverbose ] [ -vvv|veryveryverbose ] [ -index ] [ -show ] [ -interval ] [ -tolerance mm ] [ -check ] [ -checkFoR ] [ -descending ] [ -sortby|k attributename ] DESCRIPTION
dcsort reads the named dicom input files and sorts them by the specified sort key. The sort key should be a single valued numeric attribute, with the exception of ImageOrientationPatient and ImagePositionPatient which are handled as special cases. There is no output by default unless the index or verbose options are specified. OPTIONS
The output and errors go to standard error. The basic input switches are described in dcintro(1). Options specific to this program are: -index Creates a first column of output that is the index in the sort order, starting from 0, and a second column that is the filename. -show Show the value of the sort key after the file name with the -index option -interval Show the interval between values of the sort key, or an error if not equal -tolerance mm The tolerance value in mm to use when comparing intervals between slices; defaults to +/- 0.01 mm if unspecified -check Check that all the images are from the same series. -checkFoR Check that all the images have the same Frame of Reference (UID). -descending Sort in descending, rather than the default ascending, order. -sortby|k attributename Specify attributename as the sort key. ENVIRONMENT
EXAMPLES
% dcsort -index -sortby SliceLocation ./1/[0-9]* 0 ./1/1 1 ./1/2 FILES
SEE ALSO
dcintro(1) AUTHOR
Copyright (C) 1993-2010. David A. Clunie DBA PixelMed Publishing. All rights reserved. BUGS
DICOM PS3 22 December 2006 DCSORT(1)
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