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#!/bin/sh
  
# define default value
  
URL='https://fetionapi.appspot.com/api/'
  
# your phone number
  
from='13600000000'
  
# your fetion password
  
PW='password'
  
# send sms to ...
  
TO=$from  
# message
  
MSG=''
  
case $# in
  
    1
)  MSG=$
1
  
        ;;  
    2
)  MSG=$
2
  
        TO=$1
  
        ;;  
    3
)  from=$
1
  
        PW=$2
  
        TO=$from  
        MSG=$3
  
        ;;  
    4
)  from=$
1
  
        PW=$2
  
        TO=$3
  
        MSG=$4
  
        ;;  
    *)  echo "usage: $0 [from pw] [to] msg."
  
        exit 1
  
        ;;  
esac  
result=`curl -d "from=$from"
 -d 
"pw=$PW"
 -d 
"to=$TO"
 -d 
"msg=$MSG"
 
"$URL"
 
2
>/dev/null`  
case `echo $r


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Zero Copy I: User-Mode Perspective
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