Using grep with the file-test operators. : grep « Regular Expression « Perl






  1. Perl
  2. Regular Expression
  3. grep

Using grep with the file-test operators.

     
#!/usr/local/bin/perl 

opendir(CURRDIR, ".") || 
die("Can't open current directory"); 
@filelist = grep (!/^\./, grep(-r, readdir(CURRDIR))); 
closedir(CURRDIR); 
foreach $file (@filelist) { 
    open (CURRFILE, $file) || die ("Can't open input file $file"); 
    while ($line = <CURRFILE>) { 
        if ($line =~ /$ARGV[0]/) { 
            print ("$file:$line"); 
        } 
    } 
    close (CURRFILE); 
}








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