Grep in Perl - Searching through multiple files Post: 302627721

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Searching multiple files with multiple expressions

I am using a DEC ALPHA running Digital UNIX (formly DEC OSF/1) and ksh. I have a directory with hundreds of files that only share the extension .rpt. I would like to search that directory based on serial number and operation number and only files that meet both requirements to be printed out. I...

2. UNIX for Dummies Questions & Answers

Perl searching and printing multiple target in the same line

Hello, I'm trying to create a program in perl called myfind.pl; To use the program: (at the command line)$ program.pl keyword filename note: the keyword is any word or regular expression and it should display the result just like when you 'cat' the file name but with the keyword in...

3. Shell Programming and Scripting

Searching for multiple patterns in files

I have a situation where I need to search for multiple strings (error messages) such as 'aborted' 'file not found' etc in directory having logs. I have put all the error messages in a text file and using the command. grep -f <textfile> <filetobegrepped> I'm doing this thru a script where I...

4. Shell Programming and Scripting

Perl, searching multiple files and printing returned line to new file

I am trying to find a way to utilise the full potential of my cpu cores and memory on my windows machine. Now, I am quite familiar with grep, however, running a Unix based OS is not an option right now. Unfortunately, the 32 bit grep for windows that I am running, I cannot run multiple...

5. Shell Programming and Scripting

Searching a word in multiple files

Hi All, I have a issue in pulling some heavy records , I have my input file has 10,000 records which i need to compare with daily appended log files from (sep 1st 2009 to till date) . I tried to use grep fgrep and even sed , but the as time is factor for me , i cannot wait for 5 days to get the...

6. Shell Programming and Scripting

Searching across multiple files if pattern is available in all files searched

I have a list of pattern in a file, I want each of these pattern been searched from 4 files. I was wondering this can be done in SED / AWK. say my 4 files to be searched are > cat f1 abc/x(12) 1 abc/x 3 cde 2 zzz 3 fdf 4 > cat f2 fdf 4 cde 3 abc 2...

7. Shell Programming and Scripting

searching multiple patterns in perl

Hi, I have code like: Output it is comming as: Rels: WM2 Rels: WG2 Rels: 5 - pre/prods.pl Rels: 6 Rels: 7 Rels: 8 Rels: 10 Rels: Int But i want only "Rels: 5" pattern Just above "- pre/prods.pl". By...

8. UNIX for Dummies Questions & Answers

Grep - Searching for multiple items using one command

I am performing a regular check on UNIX servers which involves logging onto UNIX servers and using the grep command to check if a GID exists in the /etc/group directory e.g. grep 12345 /etc/group I have five to check on each server, is there anyway I can incorporate them into one command and...

9. Shell Programming and Scripting

Searching for multiple patters using grep

i have a file as below grepfile.txt ---------------- RNTO command successful No such file or directory Authentication failed if i seach individually for 'RNTO command successful' or 'No such file or directory' using grep -i as below, im gettting result. grep -i 'No such file or...

10. BSD

Searching in multiple files

I am new to unix and I would like to search multiple log files to find earliest occurrence of a text. Ex: Say I have 10 logs file each ending with .log and I want to find the text “CustomeError” . I want to find the which log file “CustomeError” comes first and lines which surround’s ...

LEARN ABOUT CENTOS

perl::critic::policy::builtinfunctions::requireblockgrep

Perl::Critic::Policy::BuiltinFunctions::RequireBlockGrepUser Contributed Perl DocumentaPerl::Critic::Policy::BuiltinFunctions::RequireBlockGrep(3)

NAME

       Perl::Critic::Policy::BuiltinFunctions::RequireBlockGrep - Write "grep { $_ =~ /$pattern/ } @list" instead of "grep /$pattern/, @list".

AFFILIATION

       This Policy is part of the core Perl::Critic distribution.

DESCRIPTION

       The expression forms of "grep" and "map" are awkward and hard to read.  Use the block forms instead.

	   @matches = grep  /pattern/,	  @list;	#not ok
	   @matches = grep { /pattern/ }  @list;	#ok

	   @mapped = map  transform($_),    @list;	#not ok
	   @mapped = map { transform($_) }  @list;	#ok

CONFIGURATION

       This Policy is not configurable except for the standard options.

SEE ALSO

       Perl::Critic::Policy::BuiltinFunctions::ProhibitStringyEval

       Perl::Critic::Policy::BuiltinFunctions::RequireBlockMap

AUTHOR

       Jeffrey Ryan Thalhammer <jeff@imaginative-software.com>

COPYRIGHT

       Copyright (c) 2005-2011 Imaginative Software Systems.  All rights reserved.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.  The full text of this license
       can be found in the LICENSE file included with this module.

perl v5.16.3							    2014-06-09	       Perl::Critic::Policy::BuiltinFunctions::RequireBlockGrep(3)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Searching multiple files with multiple expressions

Discussion started by: Anahka

2. UNIX for Dummies Questions & Answers

Perl searching and printing multiple target in the same line

Discussion started by: Horizon666

3. Shell Programming and Scripting

Searching for multiple patterns in files

Discussion started by: bornon2303

4. Shell Programming and Scripting

Perl, searching multiple files and printing returned line to new file

Discussion started by: Moloch