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Extract string from multiple file based on line count number

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Top Forums Shell Programming and Scripting Extract string from multiple file based on line count number
# 8  
Old 04-04-2011
Quote:
Originally Posted by cgkmal
Code:
awk '{gsub(/-/," -");a[FNR]=a[FNR]?a[FNR] FS $3:$3}END{for (i=1;i in a;i++) print a[i]}' FILE* # With gsub()

That won't work because of the "-" used by the exponential notation. See my post for a gsub() sequence that should work.

Regards,
Alister
# 9  
Old 04-04-2011
Quote:
Originally Posted by alister
That won't work because of the "-" used by the exponential notation. See my post for a gsub() sequence that should work.

Regards,
Alister
Right!,

Thanks for your observation Alister, I had not considered the "E-[0-9][0-9]" part.
The option would be:
Code:
awk '{$0=gensub(/([0-9])-/,"\\1 -","g");a[FNR]=a[FNR]?a[FNR] FS $3:$3}END{for (i=1;i in a;i++) print a[i]}' FILE* 

or a little bit shorter:
awk '{$0=gensub(/([0-9])-/,"\\1 -","g");a[FNR]=a[FNR]?a[FNR] FS $3:$3}END{for(i in a) print a[i]}' FILE*

Regards
# 10  
Old 04-04-2011
Quote:
Originally Posted by cgkmal
[COLOR=Navy]
awk '{$0=gensub(/([0-9])-/,"\\1 -","g");a[FNR]=a[FNR]?a[FNR] FS $3:$3}END{for(i in a) print a[i]}' FILE*

[/CODE]Regards
This will lost original sequence, you can't short it by this way.

That's why I use below code.
Code:
for (i=1;i in a;i++)

This User Gave Thanks to rdcwayx For This Post:
guns
# 11  
Old 04-04-2011
@ rdcwayx : Thanks a million. Your solution working perfectly.

@ alister, cgkmal : Thanks for showing other way. Now I should learn more. Thanks you.

@ pravin27 : Your script makes an inconsistency result between data after line 2 to below.. Thanks anyway for using perl as an option.

THANK YOU VERY MUCH FOR ALL OF YOU.
# 12  
Old 04-04-2011
Quote:
Originally Posted by rdcwayx
This will lost original sequence, you can't short it by this way.


Thanks, something new I learnedSmilie

Regards
# 13  
Old 04-07-2011
try below perl
my @arr;
my @files = glob("*.txt");
foreach my $f (@files){
open FH,"<$f";
while(<FH>){
my @tmp = split(/(?Smilie?<=[0-9])(?=-)|\s+)/g,$_);
$arr[$.]= $arr[$.]." ".$tmp[2];
}
close FH;
}
for(my $i=1;$i<=$#arr;$i++){
print $arr[$i],"\n";
}
# 14  
Old 04-07-2011
@cgkmal
@rdcwayx
@alister

I just wanted to pointed out a potential unexpected behaviour :

If one of the considered a[FNR] fields of the scanned files has the value 0

the code :

Code:
a[FNR]=a[FNR]?a[FNR] FS $3:$3

will behave a wrong way :

a[FNR]? will be evaluated to "false" so that the a[FNR] will be reset to $3 and may lose the previous concatenated values which doesn't fit with what we are looking for ...
These 2 Users Gave Thanks to ctsgnb For This Post:
alister rdcwayx
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