troubleshooting Question

UNIX shell script -- use of special charecters

Avatar of Katewadi
KatewadiFlag for United States of America asked on
Unix OS
5 Comments3 Solutions359 ViewsLast Modified:
Hi,
I need explaination for the following shell script (KSH) code. I want to know why / how these special charecters (Ex: "%", "/", "*", and "#" ) are being used to set the variables here?

if [ ${compfile%/*} = $compfile ]
then
  comppath=
  rootname=${compfile%.*}
  fcompfile=compfile
  fext=${compfile##*.}
else
  comppath=${compfile%/*}/
  fcompfile=${compfile##*/}
  rootname=${fcompfile%.*}
  fext=${fcompfile##*.}
fi

Regards,

-Katewadi
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