Bash and ip variable

skids48 · 02-14-2008, 03:59 PM

I've been searchin all week and haven't been able to find an answer anyplace. What I want to do ic create a script that reads the IP form a computer and if the IP matches a certain range, move to that section of my script.

1. Read the PC IP address

2. If the IP is 10.3.3.x then move to that section of my script to
execute the drive mappings for that subnet (building)

3. If the IP is 10.10.10.x then move to that section of my script to
execute the drive mappings for that subnet (building)

I can get the IP address with ifconfig but I can't figure out how to
check it agianst the first three octects of an IP and move on

unSpawn · 02-14-2008, 07:27 PM

Lotsa choices:

Code:

addr="10.10.10.10"
case "$addr" in
 10.3.3.*) doSomething;;
 10.10.10.*) doSomethingElse;;
esac

Code:

addr="10.10.10.10"; addr=(${addr//./ })
if [ ${addr[0]} -eq 10 -a ${addr[1]} -eq 3 ]; then 
 doSomething
elif [ ${addr[0]} -eq 10 -a ${addr[1]} -eq 10 ]; then 
 doSomethingElse
fi

Code:

addr="10.10.10.10"
echo "$addr"|grep -q '10.3.[0-9]\{1,3\}.[0-9]\{1,3\}' && doSomething || doSomethingElse

skids48 · 02-15-2008, 07:02 AM

Quote:

Originally Posted by unSpawn

Lotsa choices:

Code:

addr="10.10.10.10"
case "$addr" in
 10.3.3.*) doSomething;;
 10.10.10.*) doSomethingElse;;
esac

Code:

addr="10.10.10.10"; addr=(${addr//./ })
if [ ${addr[0]} -eq 10 -a ${addr[1]} -eq 3 ]; then 
 doSomething
elif [ ${addr[0]} -eq 10 -a ${addr[1]} -eq 10 ]; then 
 doSomethingElse
fi

Code:

addr="10.10.10.10"
echo "$addr"|grep -q '10.3.[0-9]\{1,3\}.[0-9]\{1,3\}' && doSomething || doSomethingElse

Thank You!!! UnSpawn. Those look like exactly what I'm trying to do. I'm off to try them now.

Thank You Once again!!!!!!