Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Grep: Searching with a regex that contains a variable from an array
Top Forums Shell Programming and Scripting Grep: Searching with a regex that contains a variable from an array Post 302660669 by AcerAspirant on Friday 22nd of June 2012 08:03:17 PM
Old 06-22-2012
Grep: Searching with a regex that contains a variable from an array
I'm attempting to grep for lines formatted like this:

["Item","foo",

Where whatever goes in the place of foo is from an array named stuff. The command I have here an example is:

Code:
grep -e '^\[\"Item\",\"$stuff[0]\",'

Any suggestions as to why this isn't working?

---------- Post updated at 05:03 PM ---------- Previous update was at 04:17 PM ----------

This was my solution:

Code:
grep -e '^\[\"Item\",\"'$stuff[0]'\",'

It's hard to read, but basically I have $stuff[0] outside of the two regex strings. So basically I'm searching like: <["Item",">foo<",> (this isn't an actual notation it's just showing how I'm separately grep-ing for each part of the line.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

perl: storing regex in array variables trouble

hi this is an example of code: use strict; use warnings; open FILE, "/tmp/result_2"; my $regex="\\ Starting program ver. (.*)"; my $res="Program started, version <$1> - OK.\n"; while (<FILE>) { if ($_ =~ /($regex)/) { print "$res"; } } close FILE; This finds $regex and print... (3 Replies)
Discussion started by: xist
3 Replies

2. Shell Programming and Scripting

Searching array of arrays in perl

Suppose there are two arrays of arrays: @A = ( , , , ); @B = ( , , , , ); For each of $A, $A, $A..., I want to find the corresponding one in @B (match the letter, like $A eq $B), and print out both the second item, for example, $A and $B. How can I do this in perl? grep + map? Hope I... (1 Reply)
Discussion started by: zx1106
1 Replies

3. Shell Programming and Scripting

Searching for array in large list of files

I tried to make the title/subject detailed, but well.. have to keep it short as well. I am wanting to take a large list of strings, and search through a large list of files to hopefully find numerous matches. I am not sure the quickest way to do this though. // List of files file1.txt... (2 Replies)
Discussion started by: Rhije
2 Replies

4. Shell Programming and Scripting

Perl grep array against array

Hi, Is there any way I can grep an array against another array? Basically here's what I need to do. There will be an array containing some fixed texts and I have to check whether some files contain these lines. Reading the same files over and over again for each different pattern doesnt seem... (1 Reply)
Discussion started by: King Nothing
1 Replies

5. UNIX for Dummies Questions & Answers

| help | unix | grep (GNU grep) 2.5.1 | advanced regex syntax

Hello, I'm working on unix with grep (GNU grep) 2.5.1. I'm going through some of the newer regex syntax using Regular Expression Reference - Advanced Syntax a guide. ls -aLl /bin | grep "\(x\)" Which works, just highlights 'x' where ever, when ever. I'm trying to to get (?:) to work but... (4 Replies)
Discussion started by: MykC
4 Replies

6. Shell Programming and Scripting

perl : searching for month and storing the date and time in an array

I am writing the code in perl. I have an array in perl and each variable in the array contains the data in the below format Now I need to check the below variable w.r.t system month I need to store the date and time(Tue Aug 7 03:54:12 2012) from the below data into file if contains only 'Aug'... (5 Replies)
Discussion started by: giridhar276
5 Replies

7. Shell Programming and Scripting

Bash 3.2 - Array / Regex - IF 3rd member in array ends in 5 digits then do somthing...

Trying to do some control flow parsing based on the index postion of an array member. Here is the pseudo code I am trying to write in (preferably in pure bash) where possible. I am thinking regex with do the trick, but need a little help. pesudo code if == ENDSINFIVEINTS ]]; then do... (4 Replies)
Discussion started by: briandanielz
4 Replies

8. Shell Programming and Scripting

How to insert an array element within regex?

Hello to all, I'm trying to separate the string "str" using a regex within match function. The substrings that I want to separate, begin with 22, 23, 24 or 25 and followed by 12 or 14 characters. And I want to replace 22 with MJS, 23 with UYT, 24 with WER and 25 with PIL. For this string... (4 Replies)
Discussion started by: Ophiuchus
4 Replies

9. Homework & Coursework Questions

Searching array

I'am writing a program in C language and my code is working perfectly i just need to add a search to it ... My code lets users add companies, and then display them on screen... i would like to add a search that allows user to type company name and then displayall its info on the screen !! THANK... (1 Reply)
Discussion started by: aloushi
1 Replies

10. Shell Programming and Scripting

Fastest alternatives to flattening a non-uniform nested array with regex?

Hello, I'm looking at simplfying a function that flattens an array, it uses recursion and filters objects by type but this seems to be a waste of resources to me at least, using conditionals like this seems like a bad idea. The array can be a generic type, int, string, float but not some... (2 Replies)
Discussion started by: f77hack
2 Replies

LEARN ABOUT BSD

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 10:25 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy