#! /bin/sh
# #############################################################################

       NAME_="crfilen"
       HTML_="create file"
    PURPOSE_="create a file n bytes large"
   SYNOPSIS_="$NAME_ [-hl] <n> <file>"
   REQUIRES_="standard GNU commands"
    VERSION_="1.0"
       DATE_="2004-05-27; last update: 2004-06-14"
     AUTHOR_="Dawid Michalczyk <dm@eonworks.com>"
        URL_="www.comp.eonworks.com"
   CATEGORY_="file"
   PLATFORM_="Linux"
      SHELL_="bash"
 DISTRIBUTE_="yes"

# #############################################################################
# This program is distributed under the terms of the GNU General Public License

usage () {

echo >&2 "$NAME_ $VERSION_ - $PURPOSE_
Usage: $SYNOPSIS_
Requires: $REQUIRES_
Options:
     <n>, an integer referring to the size of file in bytes
     -h, usage and options (this help)
     -l, see this script"
    exit 1
}

#  args check
[ $# -eq 2 ] || { echo >&2 ${NAME_}: invalid argument format, type $NAME_ -h for help; exit 1; }

# option handling
case $1 in
    -h) usage ;;
    -l) more $0; exit 1 ;;
    *[!0-9]*) echo >&2 ${NAME_}: the first argument must be an integer; exit 1 ;;
#    -*) echo "invalid argument, type "$NAME_ "-h for help"; exit 1 ;;
esac

c=0
while (( $c != $1 ));do
    echo -n a >> "$2"
    ((c++))
done