Re: storing grep output to variable

You are mixing Perl and a utility program in an odd way. Your example looks like it's trying to feed grep a slurp, and you want the file name, not the file contents. Either try:

  my $output = `/usr/bin/grep "$prop" /path/to/file`;
[download]

Or try applying a regular expression to the contents of the file using only Perl.

Comment on Re: storing grep output to variable Download Code

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Re^2: storing grep output to variable by Anonymous Monk on Jun 08, 2004 at 16:02 UTC
I could easily be doing something very odd - I only started learning Perl a few days ago. Is grep not a Perl function? What I am trying to do is to retrieve the line of my file that contains the variable $prop, which is fed in on the command line, and store that entire line in a variable. When I try implementing the code that pelagic sent, I get the entire file output, instead of just the one line I want - odd since the input string is unique.	[reply]
Re^3: storing grep output to variable by pbeckingham (Parson) on Jun 08, 2004 at 19:05 UTC
Yes, grep is a Perl function, but you are doing this: `grep ...` [download] and the backtick operators invoke a shell to run grep, which is also a Unix system utility.	[reply] [d/l]