Shell Programming and Scripting

Hi,
I m working on a solution which wud script the following scenarios but not quite getting to work 100%.

Case1(very simple)
S1: HELLO_WORLD_HOW_ARE_YOU
S2: HELLO
Easy n simple soln wud be : echo "$S1" | grep "$S2"

Case2:
S1:HELLO_WORLD_HOW_ARE_YOU
S2:HELLO_HOW_ARE_YOU
In this case, above soln would not return TRUE though my S2 is indeed part of S1 but S2 is basically not Continuous.
I am looking for a soln which wud throw a 1 in the above case.

Case3:
S1:HELLO_WORLD_HOW_ARE_YOU
S2:HELLO_JOHN or HI_WORLD
Even this shud return a TRUE.

Basically my intention is, even if a particular pattern in S2(need not be the entire string S2) matches somewhere in S1, I shud get a TRUE .
Plz remember, both S1 and S2 are not Fixed length !

Any ideas?.

-Anduzzi

Try to split second argument (with respect to '_' or space)
and grep their occurence within arg1 individually.
The answer can depend on how many splitted words occured in input
(e.g. 50%).

Please see the forum rules, note (9):

don't write in cyberchat or cyberpunk style

Do you mean:

Code:

S1=HELLO_WORLD_HOW_ARE_YOU
S2=HELLO
echo "$S1" | grep "$S2"

If so, you don't need grep:

Code:

case $S1 in
  *"$S2"*) true ;;
  *) false ;;
esac

What do you mean by "not continuous"?

Do you want it to return true (0) or 1 (false)?

Code:

S1=HELLO_WORLD_HOW_ARE_YOU
S2="HELLO_JOHN"
if echo "$S1" | grep "${S2%%_*}"
then
  echo true
else
  echo false
fi

Or:

Code:

S1=HELLO_WORLD_HOW_ARE_YOU
S2='HELLO_JOHN'
case $S1 in
  *"${S2%%_*}"*) echo true ;;
  *) echo false ;;
esac

Which "particular pattern" do you want to match? If it's the string preceding the first underscore, use ${S2%%_*} as above.

Hi Johnson,
Thanks for your inputs.
Well, when I mean the sting to be searched for is not continuous, it means the occurence of entire S2 in S1 need not be continuous in lot of cases.
eg:
S1 = HELLO_HOW_ARE_YOU
S2 = HELLO_YOU

The above case should be a true.
and when I say true, it means once the S2 is found of to be part of S1(considering all the scenarios), I need to perform an action else skip my processing and I am not looking for a particular pattern but rather a combination of patterns(both continuous and non-continuous)...hope this gives more clarity....

-Anduzzi

try this

Code:

#! /usr/bin/perl
use warnings;
my $S1 = HExLLO_HOW_ARE_YOU;
my $S2 = HELLO_YU_ARE;

my @s1array = split(/_/,$S1);
my @s2array = split(/_/,$S2);

foreach (@s1array){
                $value1 = $_;
                foreach(@s2array){                        $value2 = $_;                           if ($value1 =~ $value2){
                        print "True\n"; exit; }}}
print "False\n";

Thanks
Ahamed Shameer
netgiz.net -