Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Help With String Manipulation

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Help With String Manipulation
# 8  
Old 08-10-2011
Alternate Sed..
Code:
# Below sed requires last line of the file to be an empty line
sed -n 'H;/^  */{x;s/\(.*aa=\)[^,]*\(,.*\n\)\(mail: \)\([^\n]*\)\(\n.*\)\n/\1\4\2\3\4\5/p}' inputfile

Code:
# but not this one..
sed -n 'H;/^  */{x;s/\(.*aa=\)[^,]*\(,.*\n\)\(mail: \)\([^\n]*\)\(\n.*\)\n/\1\4\2\3\4\5/p};
${x;s/\(.*aa=\)[^,]*\(,.*\n\)\(mail: \)\([^\n]*\)\(\n.*\)/\1\4\2\3\4\5/p}' inputfile

Last edited by michaelrozar17; 08-10-2011 at 08:39 AM..
# 9  
Old 08-10-2011
This should work, irrespective of the order of labels:
Code:
awk '{for(i=1;i<NF;i++)if($i=="mail:")sub(/aa=[^,]*/,"aa="$(i+1))}1' RS= ORS='\n\n' infile

# 10  
Old 08-10-2011
Quote:
Originally Posted by Scrutinizer
This should work, irrespective of the order of labels:
Code:
awk '{for(i=1;i<NF;i++)if($i=="mail:")sub(/aa=[^,]*/,"aa="$(i+1))}1' RS= ORS='\n\n' infile

Scrut, doesn't look it is returning the desired output

:~$ awk '{for(i=1;i<NF;i++)if($i=="mail:")sub(/aa=[^,]*/,"aa="$(i+1))}1' RS= ORS='\n\n' /tmp/t1

here is the output from above:

dn: aa=med@123.com,OU=111,OU=222,DC=333
uid: xyz@123.com
sdf: aaa
mail: abc@123.com

dn: aa=abc,OU=111,OU=222,DC=333
uid: npr@123.com
mail: npr@123.com
sdf: www

dn: aa=qqq@231.com,OU=111,OU=222,DC=333
mail: def@123.com
uid: def@123.com
sdf: eee

dn: aa=ram,OU=111,OU=222,DC=333
mail: med@123.com
uid: med@123.com
sdf: qqq
# 11  
Old 08-10-2011
@dude2cool.
That has to do with the fact that the sample posted here for some reason contains a space on the empty lines. Then the RS= construction does not work, since it needs two consecutive carriage returns to separate records. If you test with a sample with real empty lines, then it should work.
# 12  
Old 08-10-2011
Yes, invisible requirements are hard to fulfill! Smilie
# 13  
Old 08-10-2011
@scrutinizer - thanks for the explanation.

@DGPicket - lol, Smilie
# 14  
Old 08-10-2011
Actually, there are extended regex to deal with possible white space, similar to this:

Regex Tutorial - \b Word Boundaries

One friend says the PERL guys dominated POSIX and expanded regex in a PERL flavored way from traditional meanings, somewhat a departure from most UNIX things being forward compatible. Goodbye '\<' and '\>' !
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

String Manipulation

I'm making a little game in Perl, and I am trying to remove the first instance of a character in an arbitrary string. For example, if the string is "cupcakes"and the user enters another string that contains letters from "cupcake" e.g: "sake"the original string will now look like this (below)... (3 Replies)
Discussion started by: whyte_rhyno
3 Replies

2. Shell Programming and Scripting

Deleting part of a string : string manipulation

i have something like this... echo "teCertificateId" | awk -F'Id' '{ print $1 }' | awk -F'te' '{ print $2 }' Certifica the awk should remove 'te' only if it is present at the start of the string.. anywhere else it should ignore it. expected output is Certificate (7 Replies)
Discussion started by: vivek d r
7 Replies

3. Shell Programming and Scripting

String manipulation

Hello Could you help with small script: How to split string X1 into 3 string String X1 can have 1 or many strings X1='A1:B1:C1:D1:A2:B2:C2:D2:A3:B3:C3:D3' This is output which I want to have: Z1='A1:B1:C1:D1' Z2='A2:B2:C2:D2' Z3='A3:B3:C3:D3' (5 Replies)
Discussion started by: vikus
5 Replies

4. Shell Programming and Scripting

String manipulation

Hi All, Pls help me out on the below, 05 LAMSZ201-ZM-MEMO2-DATE02-5 PIC X(10). 05 LAMSZ201-ZM-MEMO2-AMT02-5 PIC S9(13)V99. 05 LAMSZ201-ZM-MEMO2-TYPE02-6 PIC XXX. 05 LAMSZ201-ZM-MEMO2-DATE02-6 PIC X(10). 05 ... (2 Replies)
Discussion started by: baskivs
2 Replies

5. Shell Programming and Scripting

String Manipulation

Hi, I have a file in the following format 123|shanwer|15DEC2010|bgbh|okok|16JAN3000|okok| I want the following to be in following format 123|shanwer|12\15\2010|bgbh|okok|01\16\3000|okok| SED/PERL/AWK Gurus could you please help me with this? Thanks Shankar (8 Replies)
Discussion started by: Shan2210
8 Replies

6. Shell Programming and Scripting

I need help with string manipulation

First of all I am VERY new to this so bare with me and try and explain everything even if it seems simple. Basically I want to read a line of text from a html file. See if the line of text has a certain string in it. copy an unknown number of characters (the last 4 characters wiil be ".jpg" the... (1 Reply)
Discussion started by: c3lica
1 Replies

7. Shell Programming and Scripting

string manipulation

i have a file that contains a pattern like this: ajay 1234 newyork available kumar 2345 denver singh 2345 newyork ajay 3456 denver kumar 3456 newyork singh 3456 delhi available ajay 4567 miami kumar 4567 miami singh 4567 delhi i want to search for each line... (5 Replies)
Discussion started by: ajay41aj
5 Replies

8. Shell Programming and Scripting

String manipulation

Hi, i am just gettin exposed to UNIX. Could anyone of u help me out with dis problem..? i have a variable 'act' which has the value as follows, echo $act gives -0- -0- -----0---- 2008-06-04 -0- -0- echo "$act" | awk '{print ($act)}' gives, -0- -0- -----0---- 2008-06-04 -0- -0- I... (2 Replies)
Discussion started by: jerrynimrod
2 Replies

9. UNIX for Dummies Questions & Answers

string manipulation

Hi, I have a file with rows of text like so : E100005568374098100000015667 D100005568374032000000112682 H100005228374060800000002430 I need to grab just the last digits(bolded) of each line without the proceeding text/numbers. Thanks (5 Replies)
Discussion started by: james6
5 Replies

10. Shell Programming and Scripting

String Manipulation

Hi, Suppose I have the following text in a file. ORA-00942: table or view does not exist ORA-01555: snapshot too old: rollback segment number string with name "string" too small Is there any way I can list all the text that starts only with 'ORA-'? Or there any grep command that can... (7 Replies)
Discussion started by: kakashi_jet
7 Replies
Login or Register to Ask a Question