#!/bin/csh -f
# adds or changes spezified extension to all spezified files
# usage: RENAME ext file(s)
#
if ($#argv < 2) then
 echo 'usage: RENAME ext file(s)'
 exit 1
endif

if ($1 != "") then
 set ext = .$1
else
 set ext = $1
endif
shift argv
foreach file ($argv[*])
 if (-e $file:r$ext) then
  echo -n $file:r$ext 'exists - shall I overwrite it? '
  set in = $<
 else
  set in = yes
 endif
 if ($in =~ [jJyY]*) mv $file $file:r$ext
end
exit 0