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Loops (including exclusing whille values)

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# 1  
Old 04-01-2009
Loops (including exclusing whille values)
Is there a way to make the following script more efficient using a single loop? I want n to be 1 through 254 excluding 10 and 225. How would I go about doing that?

Code:
#!/usr/local/bin/bash
nr="172.16.2."
n=1
msg="Adding static route for: "
while [ $n -le 9 ]
do
        /bin/echo $msg$nr$n
        /sbin/route add $nr$n -interface tun0
        n=$((n+1))
done
n=11
while [ $n -le 224 ]
do
        /bin/echo $msg$nr$n
        /sbin/route add $nr$n -interface tun0
        n=$((n+1))
done
n=232
while [ $n -le 254 ]
do
        /bin/echo $msg$nr$n
        /sbin/route add $nr$n -interface tun0
        n=$((n+1))
done

Thanks! Smilie

J.
# 2  
Old 04-01-2009
Something like that ?
Code:
#!/usr/local/bin/bash
nr="172.16.2."
msg="Adding static route for: "

for n in {1..254};
do
	case $n in 
		10|225) continue;;
		*)	/bin/echo $msg$nr$n
			/sbin/route add $nr$n -interface tun0;;
	esac
done

# 3  
Old 04-01-2009

Code:
while [ $n -le 254 ]
do
   [ $n -eq 10 ] || [ $n -eq 225 ] && continue
   echo $msg$nr$n 
   /sbin/route add $nr$n -interface tun0
   n=$((n+1))
done

# 4  
Old 04-01-2009
Awesome!

Thanks guys! Smilie
# 5  
Old 04-01-2009
Quote:
Originally Posted by cfajohnson

Code:
while [ $n -le 254 ]
do
   [ $n -eq 10 ] || [ $n -eq 225 ] && continue
   echo $msg$nr$n 
   /sbin/route add $nr$n -interface tun0
   n=$((n+1))
done

For some reason I'm having trouble getting it to work this way. It gets to 9 and hangs at 10.

Thanks!
# 6  
Old 04-01-2009

Sorry; the increment needs to be at the top of the loop:

Code:
n=0
while [ $n -le 254 ]
do
   n=$((n+1))
   [ $n -eq 10 ] || [ $n -eq 225 ] && continue
   echo $msg$nr$n 
   /sbin/route add $nr$n -interface tun0
done

# 7  
Old 04-01-2009
Quote:
Originally Posted by cfajohnson

Sorry; the increment needs to be at the top of the loop:

Code:
n=0
while [ $n -le 254 ]
do
   n=$((n+1))
   [ $n -eq 10 ] || [ $n -eq 225 ] && continue
   echo $msg$nr$n 
   /sbin/route add $nr$n -interface tun0
done

That did it. Thank you!
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