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Piping in Perl

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# 1  
Old 09-01-2008
Piping in Perl
Hi All,

I am trying to perform the below csh code in Perl, but i am unfamiliar with Perl. Can anybody give me some advice on it ?

Csh Code:

Code:
cat filename |grep AAA| grep BBB| awk '{print("already_appended")'

# 2  
Old 09-01-2008
Code:
 
perl -lne'print "already_appended" if /AAA/ and /BBB/' filename

# 3  
Old 09-01-2008
Code:
if($string =~ m/(AAA|BBB|CCC)/)
  {print "We've got a match!\n"}

in the most common case.
# 4  
Old 09-03-2008
Hi sysgate,

Think if($string =~ m/(AAA|BBB|CCC)/) is an OR function.

In short, the purpose of the below csh shell actually grabs the lines which contain both the term AAAand BBB.
However, the Perl code which you showed me will only grab those lines containing either AAA or BBB or both.

Can anybody give me some advice ?
Was wondering if the below Perl code can work ?

Code:
 if($_ =~ "AAA" && $_ =~ "BBB" ) 
{print "We've got a match!\n"}

# 5  
Old 09-03-2008
Yes, just like in the code Radoulov already posted above. ($_ is the default target for matching, so Radoulov left it out.)
# 6  
Old 09-03-2008
Hi Era,

What if the terms we want to match is an array ?
I tried the below and it doesn;t seem to work.

Eg

Code:
 if($_ =~ @array_x[$num] && $_ =~ @array_y[$num] ) 
{print "We've got a match!\n"}

# 7  
Old 09-03-2008
Code:
 if (/$array_x[$num]/ && /$array_y[$num]/) {
   print "We've got a match!\n"
  }
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