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mkono

10-05-2010 04:37 PM

Bash Script

Creating a bash script where im reading the following line from a text file: "192.168.1.1:1092" I want it to read that and have it split into two variables: IP and Port, using the ":" as a separator.

It would be nice to not have two awk statements, sed or cut.
Any help would be greatly appreciated.

unSpawn

10-05-2010 04:51 PM

You're invited to post any (pseudo) code you've got together with any errors to receive possibly constructive comments.

grail

10-05-2010 06:45 PM

I am with unSpawn, you show us what you have and where you are getting stuck (even if that is your 2 awk / other commands) and we will help you further.

janhe

10-05-2010 06:54 PM

Code:

j=0

for i in $(echo "192.168.0.1:25" | tr ":" " ")

do

  out[$j]=$i

  j=$j+1

done

Now ${out[0]} contains the IP, and ${out[1]} contains the port.

Another way to go about it is:

Code:

ip=$(echo "192.168.0.1:25" | cut -d: -f1)

port=$(echo "192.168.0.1:25" | cut -d: -f2)

These are the only solutions I can come up with. I know you don't want the second, but it is IMO the best bash can do for you. If it can be done with less code, I am open to learn.

P.S. I thought your post was very clear and you showed your work by mentioning awk, sed and cut.

catkin

10-05-2010 08:59 PM

buf=192.168.0.1:25
IP=${buf%%:*}
port=${buf##*:}

carltm

10-05-2010 09:24 PM

This can be done without the use of sed, awk or cut.
Just read up on Internal Field Separators.

mkono

10-06-2010 09:42 AM

Thanks to everyone that posted helpful solutions. It is greatly appreciated!

mkono

10-06-2010 09:47 AM

Thanks janhe. Much appreciated for the excellent help.

Quote:

Originally Posted by janhe (Post 4118833)

Code:

j=0

for i in $(echo "192.168.0.1:25" | tr ":" " ")

do

  out[$j]=$i

  j=$j+1

done

Now ${out[0]} contains the IP, and ${out[1]} contains the port.

Another way to go about it is:

Code:

ip=$(echo "192.168.0.1:25" | cut -d: -f1)

port=$(echo "192.168.0.1:25" | cut -d: -f2)

mkono

10-06-2010 09:51 AM

Thanks Catkin. I'm going to give this one a try also. Thanks!

Quote:

Originally Posted by catkin (Post 4118915)

buf=192.168.0.1:25
IP=${buf%%:*}
port=${buf##*:}

ghostdog74

10-06-2010 10:21 AM

Code:

# buf=192.168.0.1:25

# IFS=":"

# set -- $buf

# echo $1

192.168.0.1

# echo $2

25

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