for Mac, Copy File to clipboard or Copy standard input to clipboard .

toclip.sh

#!/bin/bash

COMMAND=`basename $0`
usage(){
    echo "Usage: $COMMAND FILE"
    echo "With no FILE, read standard input."
}

error(){
  local ERROR_MESSAGE=$@
  echo "$COMMAND: $ERROR_MESSAGE"
  echo
  usage
  exit 1
}

while getopts h flag
do
case $flag in
    h) usage;exit 1;;
  esac
done

if [ ! -z $1 ]; then
  if [ -d $1 ];then
    error "$1: It is Directory"
  elif [ -e $1 ]; then
    cat $1 | pbcopy
  else
    error "$1: No such file"
  fi
elif [ -p /dev/stdin ]; then
  pbcopy
else
  error "No file and standard input"
fi