Shell Programming and Scripting

Sorry for the lack info/clarity...

Basically the subnet file will contain a list of subnets where the first to values (111.222 in this case) will not change so entries could be as follows:

111.222.xxx.x
or
111.222.xx.x
or
111.222.xxx.xx

etc etc.

So for example if the subnet was 111.222.15.0 (and making the assumption that there is also a .115 subnet present) a grep will return both:

111.222.15.0 and 111.222.115.0

What I'm struggling to do is pick out the .15.0 subnet only


NOTE - 111.222.333 is just being used as examples

what is your operating system and grep version ?

Solaris 10 and grep is SUNWggrp 11.10.0.

Also I'm trying to write the above code in ksh

i try some but result seem like correct..
maybe let check the this in ksh and bash in your script

Code:

..........
read sub

echo "`ps -ef|grep $PPID|grep -v grep`"
echo "SHEBANG : `/usr/xpg4/bin/sed -n '1s/^#!/&/p' $0`"
echo "grep : `which grep`"
echo "sub value : $sub"

...........

what is the outputs ?

Try:

Code:

grep '\.15\.0$'

The dot has a special meaning in regex and needs to be escaped...

Output:

Please enter the subnet to be changed: 111.222.333.0
root 3765 3755 0 Jun 29 pts/2 0:02 -bash
root 20968 3765 0 13:31:46 pts/2 0:00 /bin/ksh ./generate-batchlist
SHEBANG : #!/bin/ksh
grep : /usr/bin/grep
sub value : 111.222.333.0
0

---------- Post updated at 01:37 PM ---------- Previous update was at 01:35 PM ----------

Scruitinizer - that would be fine, although the problem is, the subnet address is read in via the $sub variable and won't always be .15

Then try:

Code:

grep "${sub//./\\.}$"

in bash / ksh93