Login or Register to Ask a Question and Join Our Community


UNIX for Beginners Questions & Answers

Delete multiple lines between blank lines containing two patterns

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums UNIX for Beginners Questions & Answers Delete multiple lines between blank lines containing two patterns
# 1  
Old 06-19-2018
Delete multiple lines between blank lines containing two patterns
Hi all,

I'm looking for a way (sed or awk) to delete multiple lines between blank lines containing two patterns ex:

Code:
user: alpha
parameter_1 = 15
parameter_2 = 1
parameter_3 = 0

user: alpha
parameter_1 = 15
parameter_2 = 1
parameter_3 = 0

user: alpha
parameter_1 = 16
parameter_2 = 0
parameter_3 = 1

user: beta
parameter_1 = 15
parameter_2 = 1
parameter_3 = 0

.

I want to delete the paragraph containing the same user and the same parameter_1, in the exemple: user=alpha and parameter_1=15 . The expected result should be:
Code:
user: alpha
parameter_1 = 15
parameter_2 = 1
parameter_3 = 0

user: alpha
parameter_1 = 16
parameter_2 = 0
parameter_3 = 1

user: beta
parameter_1 = 15
parameter_2 = 1
parameter_3 = 0

.

# 2  
Old 06-19-2018
Do you want to delete duplicate "records"?
If so:
Code:
awk '!a[$0]++' RS= myFile

# 3  
Old 06-19-2018
Use this if differences in parameter_2 and parameter_3 are to be ignored:
Code:
awk '!a[$1,$2]++' FS="\n" RS= ORS="\n\n" file

# 4  
Old 06-19-2018
Quote:
Originally Posted by RudiC
Use this if differences in parameter_2 and parameter_3 are to be ignored:
Code:
awk '!a[$1,$2]++' FS="\n" RS= ORS="\n\n" file

Exactly what i was looking for.

Thanks for all the solutions
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

Delete blank spaces and blank lines in a file

Hi Gurus, Somebody can say me how to delete blank spaces and blank lines in a file unix, please. Thank you for advanced. (10 Replies)
Discussion started by: systemoper
10 Replies

2. Shell Programming and Scripting

Delete blank lines in a file

Hi All, I have a file and I need to delete the lines that are blank and is starting with some characters below. Something like below: Regular Ascii File: Line1: AGODA1 BUSAN||SK Lord Beach 4/6/2012 4/7/2012 68060 Line2: AGODA2 BUSAN||SK Beach Hotel 4/6/2012 4/7/2012 610200 Line3: ... (4 Replies)
Discussion started by: rkumar28
4 Replies

3. Shell Programming and Scripting

search and replace, when found, delete multiple lines, add new set of lines?

hey guys, I tried searching but most 'search and replace' questions are related to one liners. Say I have a file to be replaced that has the following: $ cat testing.txt TESTING AAA BBB CCC DDD EEE FFF GGG HHH ENDTESTING This is the input file: (3 Replies)
Discussion started by: DeuceLee
3 Replies

4. Shell Programming and Scripting

Delete blank lines, if blank lines are more than one using shell

Hi, Consider a file named "testfile" The contents of file are as below first line added for test second line added for test third line added for test fourth line added for test fifth line added for test (5 Replies)
Discussion started by: anil8103
5 Replies

5. Shell Programming and Scripting

delete lines between patterns

Hi, I've searched in this forum all day long but was not able to find enough codes to help me do a task. The only code that I can come up with is this: sed '/ /,/ /{//p;d;}' inputfile > outputfile I would like to sed/awk/grep a file for two patterns and then delete the lines between... (4 Replies)
Discussion started by: shamushamu
4 Replies

6. Shell Programming and Scripting

Why cant i delete blank lines?

I have a sed pipeline: myVar=$(cat $FILE | sed -n '/regex/,/regex/{/regex/d;p}' | sed -n '/regex/!p' | sed -e s/*:// | sed /regex/,+8d \ ) sed '/^$/d' sed '/./!d' And i've tried to add that in a different order rather then just on the end..Why isnt it deleting all the blank... (2 Replies)
Discussion started by: omgsomuchppl
2 Replies

7. UNIX for Dummies Questions & Answers

delete traling blank lines only

Hi, I have blank line in the file, I just want to remove trailing blank lines. There are some blank lines between the lines, i don't want remove those. Just want to delete blank lines at the end. I used this command sed '/^$/d' infile > outfile, but it is not removing anything. I think... (1 Reply)
Discussion started by: visu
1 Replies

8. UNIX for Dummies Questions & Answers

delete blank lines from a file

can anyone show me how to delete blank lines from a file. thanks in advance (2 Replies)
Discussion started by: sachin.gangadha
2 Replies

9. Shell Programming and Scripting

regex to delete multiple blank lines in a file?

can't figure out a way to delete multiple empty lines but keep single empty lines in a file, file is like this #cat file 1 2 3 4 5 6 - What I want is 1 2 (6 Replies)
Discussion started by: fedora
6 Replies

10. UNIX for Dummies Questions & Answers

delete blank lines or lines with spaces only

hi there i'm trying to delete blank lines and or lines with spaces only from a series of files in an directory. to do so, i'm using this: for files in `ls /users/myname/pesop* 2>/dev/null` do grep -v ^$ $files > newfile mv newfile $files done now, this works great for blank lines but... (3 Replies)
Discussion started by: vascobrito
3 Replies
Login or Register to Ask a Question