Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Grep in Perl - Searching through multiple files
Top Forums UNIX for Dummies Questions & Answers Grep in Perl - Searching through multiple files Post 302627709 by WongSifu on Saturday 21st of April 2012 10:47:13 AM
Old 04-21-2012
Grep in Perl - Searching through multiple files
I'm attempting to use grep in Perl with very little success.

What I would like to do in Perl is get the output of the following grep code:
Code:
grep -l 'pattern' *

This gives me a list of all the files in a directory that contain the pattern that was searched.

My attempts to do this in Perl have failed so far:

Code:
	my $dir = "/cygdrive/c/TEMP; 
	opendir (my $dh, $dir) or die "Can't open $dir: $!";
		my @allFiles = grep { -f "$dir/$_" } readdir($dh);
	closedir $dh;
	
	my @legFiles = grep {/pattern/} @allFiles;
	foreach (@legFiles) {print "$_\n"};

The above code is looking at the file names and not the contents of the files.

So my question is, how to can I use grep in perl to give me a list of the files that contain a certain pattern?

Thanks in advance.
 

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... (6 Replies)
Discussion started by: Anahka
6 Replies

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... (2 Replies)
Discussion started by: Horizon666
2 Replies

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... (5 Replies)
Discussion started by: bornon2303
5 Replies

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... (1 Reply)
Discussion started by: Moloch
1 Replies

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... (3 Replies)
Discussion started by: rakesh_411
3 Replies

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... (6 Replies)
Discussion started by: novice_man
6 Replies

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... (7 Replies)
Discussion started by: Anjan1
7 Replies

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... (2 Replies)
Discussion started by: @MeDaveT
2 Replies

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... (5 Replies)
Discussion started by: JSKOBS
5 Replies

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 ... (4 Replies)
Discussion started by: jim john
4 Replies

LEARN ABOUT ULTRIX

zgrep

ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep	options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

																	  ZGREP(1)
All times are GMT -4. The time now is 03:49 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy