Login or Register to Ask a Question and Join Our Community


UNIX for Dummies Questions & Answers

Regex for beginning of line until a comma

 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers Regex for beginning of line until a comma
# 1  
Old 02-01-2011
Regex for beginning of line until a comma
What is a regex for "the dalai lama, his holiness the"
that would just grab "the dalai lama"
and one that would just grab "his holiness the"? Both should exclude the comma..

I was trying '^[a-z].*[^,]' and many variants with no luck.
# 2  
Old 02-01-2011
don't need a regex. Do a split on comma.
Code:
string = "the dalai lama, his holiness the"
OLDIFS=$IFS
IFS=","
set -- $string
echo $1
echo $2
IFS=$OLDIFS

# 3  
Old 02-01-2011
Nice solution, but I would like a regex, especially one with a \(..\) patter so I can reverse order and recall patters in Sed.
# 4  
Old 02-01-2011
Quote:
Originally Posted by glev2005
Nice solution, but I would like a regex, especially one with a \(..\) patter so I can reverse order and recall patters in Sed.
in my example above, $1 and $2 will be equivalent to your \\1 and \\2 capture groups.
# 5  
Old 02-01-2011
Code:
$ echo "the dalai lama, his holiness the" | sed 's/\(^.*\),\(.*$\)/\1/'
the dalai lama
$ echo "the dalai lama, his holiness the" | sed 's/\(^.*\),\(.*$\)/\2/'
 his holiness the

# 6  
Old 02-01-2011
Try...
Code:
$ echo "the dalai lama, his holiness the" | sed 's/\(^[^,]*\),\(.*\)/1=\1\n2=\2/'
1=the dalai lama
2= his holiness the

# 7  
Old 02-01-2011
Why two dashes after the set command? It works fine with one -
 
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

[Solved] Inserting a line beginning with regex

I have been trying to insert a line after a regex but I can't do it. Here is the code I am using: cat saved_doc SET type = type1 SET type = STORE = y /vol/san_e1 /vol/san_5 /vol/san_e9 /vol/san_e11 /vol/san_e12 /vol/san_e13 /vol/san_e14 /vol/san_e16 /vol/san_e17 /vol/san_e18... (4 Replies)
Discussion started by: newbie2010
4 Replies

2. UNIX for Dummies Questions & Answers

sed - Add a variable line to the end of a block beginning with a regex

Hi, Need some help with sed. I have a file that has sections : e.g. a=blah b=blah d=blah e=blah There's many sections in the file. (1 Reply)
Discussion started by: andyatit
1 Replies

3. Shell Programming and Scripting

beginning less from line #

Hi from a script i want to to read a file beginning at line e.g. number 21 to the EOF. less +n21 temp.txt Bevor the result, it brings an empty page, so that i cant use for scripting. Any idea how the problem can be solved? Thanks in advance! IMPe (2 Replies)
Discussion started by: IMPe
2 Replies

4. Shell Programming and Scripting

comment a line of the patterns is a the beginning of the line

I need to comment the lines starting with pattern "exclude" or "exclude=". If the work exclude comes at any other part, ignore it. Also, ignore, excludes, excluded etc. Ie only comment the line starting with exclude. File contents. exclude exclude= hi I am excluded excludes excludes= ... (9 Replies)
Discussion started by: anil510
9 Replies

5. UNIX for Dummies Questions & Answers

vim copy line and paste at the beginning, middle, and end of another line

How would you do vim copy line and paste at the beginning, middle, and end of another line. I know yy copies the whole line and p pastes the whole line, but on its own separate line. Sometimes I would like to copy a line to the beginning, middle, or end of another line. I would think this would be... (3 Replies)
Discussion started by: cokedude
3 Replies

6. UNIX for Dummies Questions & Answers

How to specify beginning-of-line/end-of-line characters inside a regex range

How can I specify special meaning characters like ^ or $ inside a regex range. e.g Suppose I want to search for a string that either starts with '|' character or begins with start-of-line character. I tried the following but it does not work: sed 's/\(\)/<do something here>/g' file1 ... (3 Replies)
Discussion started by: jawsnnn
3 Replies

7. Shell Programming and Scripting

How to grep after the first comma till the next comma in a line

Hi Can any one pls tell me how to grep this line POPULATION,69691,20120509 I want the number 69691 from the above line. How to grep from the first comma till the next comma. Thank You.:confused: (8 Replies)
Discussion started by: rxg
8 Replies

8. Shell Programming and Scripting

Space at beginning of the line

How can I delete spaces at the begining of all lines of my file ? (2 Replies)
Discussion started by: Sara_84
2 Replies

9. Shell Programming and Scripting

Remove comma and next rows beginning from the end

Hello friends, I have a file which consists of many rows, I use a couple of commands to convert it so i can use in a database query for filtering. I need the first columns (msisdns) in a row, seperated with commas, 9855162267,4,5,2010-11-03 17:02:07.627 9594567938f,5,5,2010-11-02... (9 Replies)
Discussion started by: EAGL€
9 Replies

10. Shell Programming and Scripting

Unix Script with line number at beginning of each line.

Could anybody help me. I need to create a script that reads a text file from STDIN and prints out the file to STDOUT with line numbers at the beginning of each line. Thanks. (5 Replies)
Discussion started by: mascorro
5 Replies
Login or Register to Ask a Question