Bash脚本：处理参数

Question

Can a bash/shell guru help me make a really simple bash script which handles the following - im struggling to get it working along these lines

Input is as following

./script #channel1,#channel2,#channel3 "This is the message"  

or if easier..

./script #channel1,#channel2,#channel3 -m This is the message

(anything after the -m is the message)

Now I want to loop through each of the channels, and echo the message, ie

for channel in channels
    echo channel $message
fi

thanks

Answer 1

If you are writing it, it would be easier to do

usage ()
{
  echo "usage: $0 <MESSAGE> <CHANNELS>"
  exit
}

[[ $3 ]] || usage
message=$1
shift

for channel
do
  echo $channel $message
done

Answer 2

channels=$1
message=$2
IFS=,
for channel in $channels
do  echo $channel $message
done

Example:

0>./script channel1,channel2,channel3 "This is the message"
channel1 This is the message
channel2 This is the message
channel3 This is the message