Beefy Boxes and Bandwidth Generously Provided by pair Networks
XP is just a number

Re: search for a pattern in file without opening the file

by Melly (Hermit)
on Jan 29, 2007 at 10:23 UTC ( #597059=note: print w/replies, xml ) Need Help??

in reply to search for a pattern in file without opening the file

Can you rephrase the question? i.e. "I want to check for matches in a file without using an 'open' on the file"..

Is something like

while(<STDIN>){ print $_; }
any help? (which can be run like: perl_script < a_file.txt and will iterate over the lines in a_file.txt)

<update>It also occurs to me that you might be asking "how do I grep a file that I don't have read-access to?" - in which case you are up the proverbial creek..</update>

map{$a=1-$_/10;map{$d=$a;$e=$b=$_/20-2;map{($d,$e)=(2*$d*$e+$a,$e**2 -$d**2+$b);$c=$d**2+$e**2>4?$d=8:_}1..50;print$c}0..59;print$/}0..20
Tom Melly,

Log In?

What's my password?
Create A New User
Domain Nodelet?
Node Status?
node history
Node Type: note [id://597059]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others exploiting the Monastery: (6)
As of 2022-12-05 11:44 GMT
Find Nodes?
    Voting Booth?

    No recent polls found