Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Grep string with regex numeric characters

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Grep string with regex numeric characters
# 1  
Old 06-02-2016
Grep string with regex numeric characters
Hi all,

I have the following entries in a file:

Code:
Cause Indicators=80 90
Cause Indicators=80 90
Cause Indicators=82 90
Cause Indicators=82 90
Cause Indicators=82 90

The first 2 digits might change so I am after a sort of grep which could find any first 2 digits + the second 2, something similar to:

Code:
grep "Cause Indicators='[0-9]' 90 <filename>

The adding of Cause Indicators field in the grep is mostly important since the file contains numerous amounts of numerical characters.

Can this be done via grep?

Thank you!
Last edited by RudiC; 06-02-2016 at 01:58 PM.. Reason: Added some code tags.
# 2  
Old 06-02-2016
How about
Code:
grep "Cause Indicators=[0-9][0-9] 90" file


Regarding your code sample: You may want to get accustomed to using quotes - be they single or double - in pairs, except for few and rare cases.
Last edited by RudiC; 06-02-2016 at 02:13 PM..
This User Gave Thanks to RudiC For This Post:
nms
# 3  
Old 06-02-2016
Hi Rudic,

I'm ashamed, it was so simple. I kept using the single quotes!!
# 4  
Old 06-02-2016
You could have used single quotes or double quotes in your RE, but they have to in matched pairs, and you can't include single quotes inside the double quotes unless you want those single quotes to be treated as literal characters to be matched. The command you showed us had an opening double quote, but no matching closing double quote.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Grep a particular string from column eliminating characters at the end.

Hi, So basically I have this file containing query output in seperated columns. In particular column I have the below strings: news news-prio I am trying to grep the string news without listing news-prio aswell. I tried grep "$MSG_TYPE" , grep -w "$MSG_TYPE" , grep... (4 Replies)
Discussion started by: nms
4 Replies

2. Shell Programming and Scripting

Grep with Regex multiple characters

Hi everyone, So I'm a bit confused about a regex pattern that should exist, but I can't really find any way to do it... Let's say I want to match any lines that have a specific string, but I don't know the order of the letters but I know the length. Let's say it's 10 characters and begins... (3 Replies)
Discussion started by: Lost in Cyberia
3 Replies

3. Shell Programming and Scripting

Grep with regex containing one string but not the other

Hi to you all, I'm just struggling with a regex problem and I'm pretty sure that I'm missing sth obvious... :confused: I need a regex to feed my grep in order to find lines that contain one string but not the other. Here's the data example: 2015-04-08 19:04:55,926|xxxxxxxxxx| ... (11 Replies)
Discussion started by: stresing
11 Replies

4. Shell Programming and Scripting

Regex to exclude numeric

Dear All, My regex is like below. Its says all the number in coloum is include. 11666 11777 11888 ^(?\: (0|11)(666|777|888))\\d+$ How to exclude all the numeric that not mentioned in above regex. Regards, (3 Replies)
Discussion started by: tpx99
3 Replies

5. Shell Programming and Scripting

Generate Regex numeric range with specific sub-ranges

hi all, Say i have a range like 0 - 1000 and i need to split into diffrent files the lines which are within a specific fixed sub-range. I can achieve this manually but is not scalable if the range increase. E.g cat file1.txt Response time 2 ms Response time 15 ms Response time 101... (12 Replies)
Discussion started by: varu0612
12 Replies

6. Shell Programming and Scripting

grep regex, match exact string which includes "/" anywhere on line.

I have a file that contains the 2 following lines (from /proc/mounts) /dev/sdc1 /mnt/backup2 xfs rw,relatime,attr2,noquota 0 0 /dev/sdb1 /mnt/backup xfs rw,relatime,attr2,noquota 0 0 I need to match the string in the second column exactly so that only one result is returned, e.g. > grep... (2 Replies)
Discussion started by: jelloir
2 Replies

7. Shell Programming and Scripting

grep fixed string with regex

Hello, all! Maybe the title is badly formulated, you can help me with that...! I'm using the GNU grep, and I need to make sure that grep will extract only what I tell it to. I have the following regular expression: *? Well, I need to make sure I grep only a word which may start with a... (11 Replies)
Discussion started by: teresaejunior
11 Replies

8. UNIX for Dummies Questions & Answers

Regex to match when input is not a certain string (can't use grep -v)

Hey everyone, Basically, all I'm looking for is a way to regex for not a certain string. The regex I'm looking to avoid matching is: D222 i.e. an equivalent of: awk '!/D222/' The problem is that I use this in the following command in a Bash script: ls ${source_directory} | awk... (1 Reply)
Discussion started by: kdelok
1 Replies

9. Shell Programming and Scripting

With Regex Spliting the string into Alphanumeric and Numeric part

Hi there With shell script I'm trying to split the string into two parts. One is alphanumeric part, the other one is a numeric part. dummy_postcode_1 = 'SL1' --> res_alpha = 'SL' and res_numeric = '1' dummy_postcode_2 = 'S053' --> res_alpha = 'S' and res_numeric = '053' ... (1 Reply)
Discussion started by: ozgurgul
1 Replies

10. Shell Programming and Scripting

sed, grep, awk, regex -- extracting a matched substring from a file/string

Ok, I'm stumped and can't seem to find relevant info. (I'm not even sure, I might have asked something similar before.): I'm trying to use shell scripting/UNIX commands to extract URLs from a fairly large web page, with a view to ultimately wrapping this in PHP with exec() and including the... (2 Replies)
Discussion started by: ropers
2 Replies
Login or Register to Ask a Question