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Anyway different ways of doing this program


 
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# 1  
Old 09-03-2013
Anyway different ways of doing this program

Okay so I'm 13 and my dad set me a challenge of writing a program that check to see if a box is online with input parameter when starting the program so i came back with this.The top commented out bit is what he showed me how to do after i show him my code.

Code:
#!/bin/sh
#in=${@}
#tst=`echo ${in}|tr ' ' "Z"`
#if [ "${tst}" = "" ]; then
#  echo "ERROR: Must provide some hosts as input to this script"
#  exit 1
#fi

#for hostName in $in
#do
#  ping -q -c 1 $hostName > /dev/null 2>&1
#  if [ $? -ne 0 ]; then
#    echo $hostName is offline
#  else
#    echo $hostName is online
#  fi

#done

#exit 0

count=0
x=0
while [ $count -ne $# ]
do
  if [ $count -eq 0 ]
  then
    x=$1
  elif [ $count -eq 1 ]
  then
    x=$2
  elif [ $count -eq 2 ]
  then
    x=$3
  elif [ $count -eq 3 ]
  then
    x=$4
  elif [ $count -eq 4 ]
  then
    x=$5
  elif [ $count -eq 5 ]
  then
    x=$6
  elif [ $count -eq 6 ]
  then
    x=$7
  elif [ $count -eq 7 ]
  then
    x=$8
  elif [ $count -eq 8 ]
  then
    x=$9
  fi
  ping -q -c 1 $x > /dev/null 2>&1
  if [ $? -ne 0 ]
  then
    echo "$x is offline"
  else
    echo "$x is online"
  fi
  count=`expr $count + 1`
done

Is there any different ways of doing it??
Smilie
# 2  
Old 09-03-2013
Typically for this short of problem you would use the shift shell internal.

Code:
if [ $# -eq 0 ]
then
    echo "Usage: $0 host [...]">&2
    exit 1
fi

while [ $# -gt 0 ]
do
    if ping -q -c 1 $1 > /dev/null 2>&1
    then
         echo $1 is offline
    else
        echo $1 is online
    fi
    shift
done


Last edited by Chubler_XL; 09-03-2013 at 06:13 PM..
This User Gave Thanks to Chubler_XL For This Post:
# 3  
Old 09-03-2013
I did not know about the shift command.

I am new to shell scripting and did not know that command i do know thanks Smilie.
# 4  
Old 09-06-2013
Please correct me i think it should be online first then else offline.

Quote:
Originally Posted by Chubler_XL
Typically for this short of problem you would use the shift shell internal.

Code:
if [ $# -eq 0 ]
then
    echo "Usage: $0 host [...]">&2
    exit 1
fi

while [ $# -gt 0 ]
do
    if ping -q -c 1 $1 > /dev/null 2>&1
    then
         echo $1 is online
    else
        echo $1 is offline
    fi
    shift
done


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