#!/bin/csh -f
#
# used by other scripts to rotate
# log file(s).
#
# ./rot number-of-days log-files

set num  = $argv[1]
set files = "$argv[2-]"

foreach i ( $files )
    set j = $num

    while ( $j > 0 )
        @ prev = $j - 1
        if ( -f $i.$prev ) then
            mv -f $i.$prev $i.$j
        else
            rm -f $i.$j
        endif
        set j = $prev
    end

    if ( -f $i ) then
	mv -f $i $i.0
    endif
end