if [ "$#" -eq 0 ];then
	echo "pls state the name of the file "
	else
	echo "on we go" 
	torrent=$#
	echo $torrent # i wanted this to print out the name of the parsed cmd line arg 0:(
	echo $1          #this obviously printed the name of the file i parsed at cmd line
	fi
	if [ -f $torrent ];then 
	echo "the file is here"
	else
	echo "no such file"
	fi

#!/bin/bash

# Processing of command line arguments in bash
# "shift" shifts all arguments to the left ($2=$1, $3=$2 etc.)
# "shift" returns non-zero exit-code (indicating "false")
# when no more arguments available.
# (note that $0 will not get "shifted").


ARGV0=$0 # First argument is shell command (as in C)
echo "Command: $ARGV0"

ARGC=$#  # Number of args, not counting $0
echo "Number of args: $ARGC"

i=1  # Used as argument index
while true; do
	if [ $1 ]; then
		echo "Argv[$i] = $1" # Always print $1, shifting $2 into $1 later
		shift
	else
		break # Stop loop when no more args.
	fi
	i=$((i+1))
done
echo "Done."

#!/bin/bash

# Or, without "shift": use loop counter until $# ( = number of args)

ARGV0=$0 # First argument is shell command (as in C)
echo "Command: $ARGV0"

ARGC=$#  # Number of args, not counting $0
echo "Number of args: $ARGC"

i=1  # Used as argument index
while [ $i -le $ARGC ]; do # "-le" means "less or equal", see "man test".
	# "${!i} "expands" (resolves) to $1, $2,.. by first expanding i, and
	# using the result (1,2,3..) as a variable which is then expanded.
	echo "Argv[$i] = ${!i}"
	i=$((i+1))
done
echo "Done."

#!/bin/bash
        if [ "$#" -eq 0 ];then
	echo "pls state the name of the file "
	
	
	
	else
		echo "on we go" 
				
			while [ "$2" != "" ]; do
			shift
			done
				
		if [ -f $1 ];then 
		echo "Searching for file $1 : the file is here"
		else
		echo "Searching for file $1 : no such file"
		fi

	fi

exit 0

    while getopts df: flag
    do
        case $flag in

            d)
                  echo debugging on
                  ;;
            f)
                 file=$OPTARG
                 echo filename is $file
                 ;;
            ?)
                exit
                ;;
        esac
   done
shift $(( OPTIND - 1 ))  # shift past the last flag or argument

echo parameters are $*

$ bash opt.sh -df  blah one two three
debugging on
filename is blah
parameters are one two three

$ bash opt.sh -f 
opt.sh: option requires an argument -- f

$ bash opt.sh -r 
opt.sh: illegal option -- r

#!/bin/sh

	argv[0]=$0
	bittorrent="btdownloadheadless.py"
	#   set default values
	up_speed=2
	min_port=49152
	max_port=65535
	
	if [ "$#" -eq 0 ];then
	echo "pls state the name of the file"
	exit 0
	else
	echo "on we go"
	torrent=$#
	fi

	i=1	
	if  [ -f "${!torrent}" ]; then
	echo "${!torrent} file found"
	while [ $i -lt $#  ];do
	case "${!i}" in
	"--max_upload_rate")
	i=$((i+1))
	up_speed=${!i};;
	esac
	i=$((i+1))
	done

	exec /usr/local/bin/$bittorrent --max_upload_rate=$up_speed		
	
	else
	echo "${!torrent} not found"
	fi