pattern matching


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting pattern matching
# 1  
Old 01-14-2008
pattern matching

Hi,
I am newbee to perl.

I wanna search a file and fetch a pattern starting with
"Total pancakes produced:" and get the numeric value present after the colon.

but, the filename and the phrase(Total pancakes producedSmilie must be given as input since the input varies everytime.

For example:

the file we are gonna search might contain:


Total pancakes produced: 30
Total muffin produced: 50
Total donuts produced: 70


i want to get the number 30 from tat file. the filename mite be bakers.txt
assuming that the file might have only one occurance of this particular phrase we give as input.

i am able fetch for one string but not for a bunch of string

Since the line contains only one numeric value always i wud do it by using \d.


can anybody give suggestions for my problem?

thanks,
mercury
# 2  
Old 01-14-2008
Code:
awk -F":" '/Total pancakes produced/ {print $2}' bakers.txt

# 3  
Old 01-14-2008
thanks shamrock,

but i want tat to be in perl....

inside the program....

while executing i want in the format:

perl programname.pl total number of pancakes filename.txt
# 4  
Old 01-14-2008
check perldoc -f open (open files)
check perldoc -q read ( reading files)
check perldoc -f chomp
check perldoc perlre for regexp

Code:
open(FILE,"<file") or die "Cannot open";
while (<FILE>) {
    chomp($_);
    ($f1,$f2) = split(/[:]/, $_);
    if (/Total pancakes produced/) {
        print $2;
    }
}

# 5  
Old 01-14-2008
thanks ghostdog...
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Big pattern file matching within another pattern file in awk or shell

Hi I need to do a patten match between files . I am new to shell scripting and have come up with this so far. It take 50 seconds to process files of 2mb size . I need to tune this code as file size will be around 50mb and need to save time. Main issue is that I need to search the pattern from... (2 Replies)
Discussion started by: nitin_daharwal
2 Replies

2. UNIX for Dummies Questions & Answers

Grep -v lines starting with pattern 1 and not matching pattern 2

Hi all! Thanks for taking the time to view this! I want to grep out all lines of a file that starts with pattern 1 but also does not match with the second pattern. Example: Drink a soda Eat a banana Eat multiple bananas Drink an apple juice Eat an apple Eat multiple apples I... (8 Replies)
Discussion started by: demmel
8 Replies

3. Shell Programming and Scripting

PHP - Regex for matching string containing pattern but without pattern itself

The sample file: dept1: user1,user2,user3 dept2: user4,user5,user6 dept3: user7,user8,user9 I want to match by '/^dept2.*/' but don't want to have substring 'dept2:' in output. How to compose such regex? (8 Replies)
Discussion started by: urello
8 Replies

4. Shell Programming and Scripting

Sed: printing lines AFTER pattern matching EXCLUDING the line containing the pattern

'Hi I'm using the following code to extract the lines(and redirect them to a txt file) after the pattern match. But the output is inclusive of the line with pattern match. Which option is to be used to exclude the line containing the pattern? sed -n '/Conn.*User/,$p' > consumers.txt (11 Replies)
Discussion started by: essem
11 Replies

5. UNIX for Dummies Questions & Answers

Find pattern suffix matching pattern

Hi, I am trying to get a result out of this but fails please help. Have two files /tmp/1 & /tmp/hosts. /tmp/1 IP=123.456.789.01 WAS_HOSTNAME=abcdefgh.was.tb.dsdc /tmp/hosts 123.456.789.01 I want this result in /tmp/hosts if hostname is already there dont want duplicate entry. ... (5 Replies)
Discussion started by: rajeshwebspere
5 Replies

6. Shell Programming and Scripting

sed - matching pattern one but not pattern two

All, I have the following file: -------------------------------------- # # /etc/pam.d/common-password - password-related modules common to all services # # This file is included from other service-specific PAM config files, # and should contain a list of modules that define the services... (2 Replies)
Discussion started by: RobertBerrie
2 Replies

7. Shell Programming and Scripting

counting the lines matching a pattern, in between two pattern, and generate a tab

Hi all, I'm looking for some help. I have a file (very long) that is organized like below: >Cluster 0 0 283nt, >01_FRYJ6ZM12HMXZS... at +/99% 1 279nt, >01_FRYJ6ZM12HN12A... at +/99% 2 281nt, >01_FRYJ6ZM12HM4TS... at +/99% 3 283nt, >01_FRYJ6ZM12HM946... at +/99% 4 279nt,... (4 Replies)
Discussion started by: d.chauliac
4 Replies

8. Shell Programming and Scripting

Pattern Matching

Hi Folks, I have the following requirement: I have a file that is containing numerous queries. The tables name mentioned in the queries are in the following format : SchemaName.Tablename. e.g COPDB.TableName. I need to take out all the COPDB.TableName pattern and write it to a different... (6 Replies)
Discussion started by: Siv_Pat
6 Replies

9. UNIX for Dummies Questions & Answers

Pattern Matching

Hi Folks, I have the following requirement: I have a file that is containing numerous queries. The tables name mentioned in the queries are in the following format : SchemaName.Tablename. e.g COPDB.TableName. I need to take out all the COPDB.TableName pattern and write it to a different... (0 Replies)
Discussion started by: Siv_Pat
0 Replies

10. Shell Programming and Scripting

comment/delete a particular pattern starting from second line of the matching pattern

Hi, I have file 1.txt with following entries as shown: 0152364|134444|10.20.30.40|015236433 0233654|122555|10.20.30.50|023365433 ** ** ** In file 2.txt I have the following entries as shown: 0152364|134444|10.20.30.40|015236433 0233654|122555|10.20.30.50|023365433... (4 Replies)
Discussion started by: imas
4 Replies
Login or Register to Ask a Question