Help - delete content inside square brackets under conditions


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Help - delete content inside square brackets under conditions
# 1  
Old 08-18-2014
Linux Help - delete content inside square brackets under conditions

I have the file sed1.txt and I need to strip the brackets ([[*]]) and content inside them only when
I have two or three letters followed by a colon.

for example,it may be any letter, not just abc
[[ab:*]]
[[abc:*]]

Code:
#-- cat sed1.txt
1 [[special:linguagem]] FISICA
2 [[ba:matematica:portugues]]PORTUGUES
3 [[zz:aldkljfdljdf:]] [[xy:klsdfafds99:dlfkljlkfdk]]MATEMATICA
4 [[aa:098sdf90df]][[xy:sdfakjlkfsdj]]INGLES [[agh:dkfjlfdjdf]]
5 [[wordtree:wordtreetree:tree]]QUIMICA
6 ARQUITETURA [[gg:eeoeoeoe:pepepep:eoeeeo]]ROMANA
[[as:dlfksjkldf:slkjlkfdjskldf]]7 ENGENHARIA [[aa:lksdfjlkdjfs]]ELETRICA
8 MECATRONICA [[xas:dkfljldfsaklfds]]FRANCES[[ax:skldfjlkdsf:ljsdlfkjldfs]]
9 [[bb:dsflkjladskffds]]LITERATURA [[xx:dsfaa90ssdf90sdf:ajsdfflasd]]
10[[agroneg:ArrOzFeijao | batata]][[xca:lkdjlkasdf:ldjfalkjfsd:lkdsjlkfjdç]] MEDICINA[[sa:dsflkjkldfs]]
11[[ax:lksdjfkl]] [[ss:dljsaflk]] SED [[sx:sdjflkjfsda]]- AWK
12[[xbc:lkjaflkjfds]] UNIX [[ax:kjdlfjdfskadf]]LINUX[[xu:kldfsjkljdfs]] PERL    [[gg:lksdfjlk:jljsdlkjfds:lkjlkjflds]][[hg:dfjkjfdkjfd]][[xdc:dkdkdkdkdk]][[kd:dflkjdfklkldf:djfjklfdasjfadk:jkafdsjklfdsjkldfas:*/*/*/*/]]

I managed to get this:
Code:
# sed -e 's/\[\[.\{2,3\}:.*[^]].*\]\]//g' sed1.txt 

1 [[special:linguagem]] FISICA
2 PORTUGUES
3 MATEMATICA
4 
5 [[wordtree:wordtreetree:tree]]QUIMICA
6 ARQUITETURA ROMANA
ELETRICA
8 MECATRONICA 
9 
10[[agroneg:ArrOzFeijao | batata]]
11- AWK
12

--------------
#-- sed .... the real result should be:

Code:
1 [[special:linguagem]] FISICA
2 PORTUGUES
3 MATEMATICA
4 INGLES
5 [[wordtree:wordtreetree:tree]]QUIMICA
6 ARQUITETURA ROMANA
7 ENGENHARIA ELETRICA
8 MECATRONICA FRANCES
9 LITERATURA
10[[agroneg:ArrOzFeijao | batata]]MEDICINA
11 SED - AWK
12 UNIX LINUX PERL

--------------------------------------------
What do I have to change in the script ?
# 2  
Old 08-18-2014
You were very close, .* is greedy and will match the longest string it can.

You need this:

Code:
$ sed -e 's/\[\[.\{2,3\}:[^]]*\]\]//g' sed1.txt
1 [[special:linguagem]] FISICA
2 PORTUGUES
3  MATEMATICA
4 INGLES 
5 [[wordtree:wordtreetree:tree]]QUIMICA
6 ARQUITETURA ROMANA
7 ENGENHARIA ELETRICA
8 MECATRONICA FRANCES
9 LITERATURA 
10[[agroneg:ArrOzFeijao | batata]] MEDICINA
11  SED - AWK
12 UNIX LINUX PERL

These 2 Users Gave Thanks to Chubler_XL For This Post:
# 3  
Old 08-18-2014
Thank you very much. I was struggling with it because it's been a long time since i don't use shell script.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

IF statement with square brackets

Hi All, Hope you all are doing good. Yesterday in my project i came across a scenario which i can not guess why it was working in one region and why it was not in another region. Please find my issue below. I am using AIX version 6.0 of UNIX in my project, in shell scripting i have the... (1 Reply)
Discussion started by: mad man
1 Replies

2. Shell Programming and Scripting

Problem with occurence of square brackets

Hello all, I have the following problem: $ cat infile this is spam and i need this too this is spam and i need this too $ perl -nwe '$_ =~ /]+ \]+)\]\]*\]? (\+)$/; print "$1 - $2\n";' infile i need this - too i need this - and i need this too I am not sure how many occurences of... (13 Replies)
Discussion started by: zaxxon
13 Replies

3. Shell Programming and Scripting

Compare the value in between square brackets in file

I wanted to compare the value inside the Squre bracket after Colon ( : ) based on any value(seperated by or operator | ) inside the variable Thread and if match found then wnated to store in output file Input file : 20140320 00:08:43.918 INO 35] - Corporate hub is 20140320 00:08:43.918... (2 Replies)
Discussion started by: nes
2 Replies

4. Shell Programming and Scripting

Extract text between two square [..] brackets

Hi All, After searching about this, I could find some solutions but I am not sure why it is not working in my case. I have a text file with contents between two square brackets. The text file looks like this: Use tags when you post any code so others can easily read your code. You can... (2 Replies)
Discussion started by: shoaibjameel123
2 Replies

5. Shell Programming and Scripting

Delete text between square brackets and also delete those square brackets using sed or awk

Hi All, I have a text file which looks like this: computer programming systems engineering I want to get rid of these square brackets and also the text that is inside these brackets. So that my final text file looks like this: computer programming systems engineering I am using... (3 Replies)
Discussion started by: shoaibjameel123
3 Replies

6. Shell Programming and Scripting

Replacing text between two square brackets

hi guys, i'm writing a script that looks for a unquie id in a file and replaces a string between two square brackets on the same line as the unquie id: ....... ....... 0001 zz 43242 replace this text] name 0002 sd 65466 UK] country ....... ....... how can i find line with id 0001... (6 Replies)
Discussion started by: zaff
6 Replies

7. UNIX for Dummies Questions & Answers

Test command - Two square brackets

Hello, Can someone please explain to me the following line, ] && break I do not understand why two test square brackets are used. Thanks, Shantanu ---------- Post updated at 03:38 PM ---------- Previous update was at 03:35 PM ---------- And, also why there's a $ before (echo $c |... (5 Replies)
Discussion started by: Shan_u2005
5 Replies

8. Shell Programming and Scripting

Double square brackets question

Hi, I just came across an interesting shell script syntax like the one below: ] && (trap 'rm -rf ${WORK_DIR}/*.$$; echo "\n\nInterrupted !!\n\n"; exit 4' 1 2 3 15) Can someone please explain the code snippet above? The trap command bit is fine but ] && is the hazy part. Generally we use an... (2 Replies)
Discussion started by: King Nothing
2 Replies

9. Shell Programming and Scripting

WHy the double square brackets?

One of the senior administrators gave me a shell script to modify and it begins as follows: if ] && ] {more code follows} Why the double square brackets? (10 Replies)
Discussion started by: mojoman
10 Replies

10. UNIX for Dummies Questions & Answers

square brackets

I would like to substitute a phrase which contains square brackets. change TO how? Thanks (2 Replies)
Discussion started by: gilead29
2 Replies
Login or Register to Ask a Question