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Full Discussion: Find pattern in first field of file
Top Forums Shell Programming and Scripting Find pattern in first field of file Post 302957960 by Aia on Saturday 17th of October 2015 02:13:28 AM
Old 10-17-2015
An Awk version
Code:
awk '
FNR==NR {                     # prevents loading Content.txt into array s   
    s[$0]                     # load Pattern.txt file into array s
    next                      # move to process next line of Pattern.txt
}
{
    for (p in s){             # iterate each pattern
        if(match($1, p)){     # check pattern for match against first field
            print             # print record if match is found
            next              # stop pattern iteration for this record, match was found already
        }
    }
}' Pattern.txt Content.txt

Perl version
Copy as search.pl and run as perl search.pl Pattern.txt Context.txt
Code:
#!/usr/bin/perl

# search.pl
# Perl facilities to help avoiding errors
use strict;
use warnings;

# files names to obtain from command line
my $pattern_file = shift or die;
my $context_file = shift or die;

# open pattern file for read
open my $fh, '<', $pattern_file or die;
# load pattern file into an array
my @patterns =<$fh>;
# dismiss patterns file handle
close $fh;
# remove the newline at end of record
chomp(@patterns);

# open context file for read
open $fh, '<', $context_file or die;
# iterate line by line through the context file
while(<$fh>) {
    # obtain the first field
    my ($field) = split;
    # search field for pattern; move to next line if match found
    for my $p (@patterns) {
        $field =~ /$p/ and print and next;
    }
}
# dismiss context file handle
close $fh;

This User Gave Thanks to Aia For This Post:
krsnadasa
 

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LEARN ABOUT NETBSD

set_color

set_color(1)							       fish							      set_color(1)

NAME

       set_color - set_color - set the terminal color

set_color - set the terminal color
   Synopsis
       set_color [-v --version] [-h --help] [-b --background COLOR] [COLOR]

   Description
       Change the foreground and/or background color of the terminal. COLOR is one of black, red, green, brown, yellow, blue, magenta, purple,
       cyan, white and normal.

       o -b, --background Set the background color

       o -c, --print-colors Prints a list of all valid color names

       o -h, --help Display help message and exit

       o -o, --bold Set bold or extra bright mode

       o -u, --underline Set underlined mode

       o -v, --version Display version and exit

       Calling set_color normal will set the terminal color to whatever is the default color of the terminal.

       Some terminals use the --bold escape sequence to switch to a brighter color set. On such terminals, set_color white will result in a grey
       font color, while set_color --bold white will result in a white font color.

       Not all terminal emulators support all these features. This is not a bug in set_color but a missing feature in the terminal emulator.

       set_color uses the terminfo database to look up how to change terminal colors on whatever terminal is in use. Some systems have old and
       incomplete terminfo databases, and may lack color information for terminals that support it. Download and install the latest version of
       ncurses and recompile fish against it in order to fix this issue.

Version 1.23.1							  Sun Jan 8 2012						      set_color(1)
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