I want to extract part of a line using sed and backreference

Multi tool use
Multi tool use

The name of the pictureThe name of the pictureThe name of the pictureClash Royale CLAN TAG#URR8PPP











up vote
-1
down vote

favorite












 1.The Greater Company :(Ranked 2) 
 5.United Taxi Service :(Ranked 3) 
31.The Cacao Company :(Ranked 4) 
40.Monster Inc. :(Ranked 5)
55.Afala, Industrial Strength :(Ranked 6) 
60.The North Company :(Ranked 7)


I want to display just the company number and company name. I do not want the rest of the line to be displayed.



 1.The Greater Company 
 5.United Taxi Service 
31.The Cacao Company 
40.Monster Inc. 
55.Afala, Industrial Strength 
60.The North Company


I can do this by sed 's/: .* //' filename.txt. How would I use this pattern with back reference so I can achieve the above result. The pattern that I want to match would be ([0-9]* .* :).




ubuntu sed reference




share|improve this question


















  • 1




    It appears that you're removing the ranking, not "extracting the company number and rank"; can you clarify your goal vs your output?
    – Jeff Schaller
    Feb 16 at 1:13










  • I edited it. What i meant was just have the result being displayed like that. I can do this with sed by using sed 's/: .*//' filename.txt, but i want to know how to achieve this by using backreference.
    – Rashad
    Feb 16 at 1:17










  • When somebody asks “How do I do X?”, we always ask “What have you tried?”  Have you read any documentation?  What part of it did you not understand?  And is that a :) smiley face at the end of your question?  Or are you saying that the pattern that you want to match is [0-9]* .* :, but you’re putting it in parentheses instead of quotes — this, when the input text contains parentheses (but not quotes).  That is very confusing. … (Cont’d)
    – G-Man
    Feb 16 at 4:37










  • (Cont’d) …  What’s more confusing: you say that you want to match [0-9]*  …, but your data don’t have a space after the number. And you say that you want to match … :, but your sample output shows that you don’t want to match the colon (:), just everything up to it.
    – G-Man
    Feb 16 at 4:37














up vote
-1
down vote

favorite












 1.The Greater Company :(Ranked 2) 
 5.United Taxi Service :(Ranked 3) 
31.The Cacao Company :(Ranked 4) 
40.Monster Inc. :(Ranked 5)
55.Afala, Industrial Strength :(Ranked 6) 
60.The North Company :(Ranked 7)


I want to display just the company number and company name. I do not want the rest of the line to be displayed.



 1.The Greater Company 
 5.United Taxi Service 
31.The Cacao Company 
40.Monster Inc. 
55.Afala, Industrial Strength 
60.The North Company


I can do this by sed 's/: .* //' filename.txt. How would I use this pattern with back reference so I can achieve the above result. The pattern that I want to match would be ([0-9]* .* :).




ubuntu sed reference




share|improve this question


















  • 1




    It appears that you're removing the ranking, not "extracting the company number and rank"; can you clarify your goal vs your output?
    – Jeff Schaller
    Feb 16 at 1:13










  • I edited it. What i meant was just have the result being displayed like that. I can do this with sed by using sed 's/: .*//' filename.txt, but i want to know how to achieve this by using backreference.
    – Rashad
    Feb 16 at 1:17










  • When somebody asks “How do I do X?”, we always ask “What have you tried?”  Have you read any documentation?  What part of it did you not understand?  And is that a :) smiley face at the end of your question?  Or are you saying that the pattern that you want to match is [0-9]* .* :, but you’re putting it in parentheses instead of quotes — this, when the input text contains parentheses (but not quotes).  That is very confusing. … (Cont’d)
    – G-Man
    Feb 16 at 4:37










  • (Cont’d) …  What’s more confusing: you say that you want to match [0-9]*  …, but your data don’t have a space after the number. And you say that you want to match … :, but your sample output shows that you don’t want to match the colon (:), just everything up to it.
    – G-Man
    Feb 16 at 4:37












up vote
-1
down vote

favorite









up vote
-1
down vote

favorite











 1.The Greater Company :(Ranked 2) 
 5.United Taxi Service :(Ranked 3) 
31.The Cacao Company :(Ranked 4) 
40.Monster Inc. :(Ranked 5)
55.Afala, Industrial Strength :(Ranked 6) 
60.The North Company :(Ranked 7)


I want to display just the company number and company name. I do not want the rest of the line to be displayed.



 1.The Greater Company 
 5.United Taxi Service 
31.The Cacao Company 
40.Monster Inc. 
55.Afala, Industrial Strength 
60.The North Company


I can do this by sed 's/: .* //' filename.txt. How would I use this pattern with back reference so I can achieve the above result. The pattern that I want to match would be ([0-9]* .* :).




ubuntu sed reference




share|improve this question














 1.The Greater Company :(Ranked 2) 
 5.United Taxi Service :(Ranked 3) 
31.The Cacao Company :(Ranked 4) 
40.Monster Inc. :(Ranked 5)
55.Afala, Industrial Strength :(Ranked 6) 
60.The North Company :(Ranked 7)


I want to display just the company number and company name. I do not want the rest of the line to be displayed.



 1.The Greater Company 
 5.United Taxi Service 
31.The Cacao Company 
40.Monster Inc. 
55.Afala, Industrial Strength 
60.The North Company


I can do this by sed 's/: .* //' filename.txt. How would I use this pattern with back reference so I can achieve the above result. The pattern that I want to match would be ([0-9]* .* :).





ubuntu sed reference





share|improve this question













share|improve this question




share|improve this question








edited Feb 28 at 22:33









Drakonoved

674518




674518










asked Feb 16 at 1:08









Rashad

568




568







  • 1




    It appears that you're removing the ranking, not "extracting the company number and rank"; can you clarify your goal vs your output?
    – Jeff Schaller
    Feb 16 at 1:13










  • I edited it. What i meant was just have the result being displayed like that. I can do this with sed by using sed 's/: .*//' filename.txt, but i want to know how to achieve this by using backreference.
    – Rashad
    Feb 16 at 1:17










  • When somebody asks “How do I do X?”, we always ask “What have you tried?”  Have you read any documentation?  What part of it did you not understand?  And is that a :) smiley face at the end of your question?  Or are you saying that the pattern that you want to match is [0-9]* .* :, but you’re putting it in parentheses instead of quotes — this, when the input text contains parentheses (but not quotes).  That is very confusing. … (Cont’d)
    – G-Man
    Feb 16 at 4:37










  • (Cont’d) …  What’s more confusing: you say that you want to match [0-9]*  …, but your data don’t have a space after the number. And you say that you want to match … :, but your sample output shows that you don’t want to match the colon (:), just everything up to it.
    – G-Man
    Feb 16 at 4:37












  • 1




    It appears that you're removing the ranking, not "extracting the company number and rank"; can you clarify your goal vs your output?
    – Jeff Schaller
    Feb 16 at 1:13










  • I edited it. What i meant was just have the result being displayed like that. I can do this with sed by using sed 's/: .*//' filename.txt, but i want to know how to achieve this by using backreference.
    – Rashad
    Feb 16 at 1:17










  • When somebody asks “How do I do X?”, we always ask “What have you tried?”  Have you read any documentation?  What part of it did you not understand?  And is that a :) smiley face at the end of your question?  Or are you saying that the pattern that you want to match is [0-9]* .* :, but you’re putting it in parentheses instead of quotes — this, when the input text contains parentheses (but not quotes).  That is very confusing. … (Cont’d)
    – G-Man
    Feb 16 at 4:37










  • (Cont’d) …  What’s more confusing: you say that you want to match [0-9]*  …, but your data don’t have a space after the number. And you say that you want to match … :, but your sample output shows that you don’t want to match the colon (:), just everything up to it.
    – G-Man
    Feb 16 at 4:37







1




1




It appears that you're removing the ranking, not "extracting the company number and rank"; can you clarify your goal vs your output?
– Jeff Schaller
Feb 16 at 1:13




It appears that you're removing the ranking, not "extracting the company number and rank"; can you clarify your goal vs your output?
– Jeff Schaller
Feb 16 at 1:13












I edited it. What i meant was just have the result being displayed like that. I can do this with sed by using sed 's/: .*//' filename.txt, but i want to know how to achieve this by using backreference.
– Rashad
Feb 16 at 1:17




I edited it. What i meant was just have the result being displayed like that. I can do this with sed by using sed 's/: .*//' filename.txt, but i want to know how to achieve this by using backreference.
– Rashad
Feb 16 at 1:17












When somebody asks “How do I do X?”, we always ask “What have you tried?”  Have you read any documentation?  What part of it did you not understand?  And is that a :) smiley face at the end of your question?  Or are you saying that the pattern that you want to match is [0-9]* .* :, but you’re putting it in parentheses instead of quotes — this, when the input text contains parentheses (but not quotes).  That is very confusing. … (Cont’d)
– G-Man
Feb 16 at 4:37




When somebody asks “How do I do X?”, we always ask “What have you tried?”  Have you read any documentation?  What part of it did you not understand?  And is that a :) smiley face at the end of your question?  Or are you saying that the pattern that you want to match is [0-9]* .* :, but you’re putting it in parentheses instead of quotes — this, when the input text contains parentheses (but not quotes).  That is very confusing. … (Cont’d)
– G-Man
Feb 16 at 4:37












(Cont’d) …  What’s more confusing: you say that you want to match [0-9]*  …, but your data don’t have a space after the number. And you say that you want to match … :, but your sample output shows that you don’t want to match the colon (:), just everything up to it.
– G-Man
Feb 16 at 4:37




(Cont’d) …  What’s more confusing: you say that you want to match [0-9]*  …, but your data don’t have a space after the number. And you say that you want to match … :, but your sample output shows that you don’t want to match the colon (:), just everything up to it.
– G-Man
Feb 16 at 4:37










2 Answers
2






active

oldest

votes

















up vote
1
down vote



accepted










If all of the lines begin with [0-9]* there's no need to match it explicitly: just capture up to (but not including) the : delimiter



sed 's/(^[^:]*) :.*/1/' file
 1.The Greater Company
 5.United Taxi Service
 31.The Cacao Company
 40.Monster Inc.
 55.Afala, Industrial Strength
 60.The North Company





share|improve this answer




















  • could you explain the command and how the back referencing works
    – Rashad
    Feb 16 at 1:28










  • @Rashad the pattern between ( and ) is captured, and then it is backreferenced as 1. See for example Regular Expression Reference: Capturing Groups and Backreferences
    – steeldriver
    Feb 16 at 1:34










  • You can omit the second colon: sed 's/(^[^:]*) .*/1/'
    – dessert
    Feb 16 at 7:44


















up vote
-2
down vote













grep -Pioe 's*d+.s*(w+[.,]? )+:' file





share|improve this answer






















  • The question asks how to do this with back reference.   Does your answer use back reference?  Can you explain how?
    – G-Man
    Feb 16 at 4:22










Your Answer







StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "106"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);

else
createEditor();

);

function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
convertImagesToLinks: false,
noModals: false,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);



);








 

draft saved


draft discarded


















StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f424507%2fi-want-to-extract-part-of-a-line-using-sed-and-backreference%23new-answer', 'question_page');

);

Post as a guest

















2 Answers
2






active

oldest

votes








2 Answers
2






active

oldest

votes









active

oldest

votes






active

oldest

votes








up vote
1
down vote



accepted










If all of the lines begin with [0-9]* there's no need to match it explicitly: just capture up to (but not including) the : delimiter



sed 's/(^[^:]*) :.*/1/' file
 1.The Greater Company
 5.United Taxi Service
 31.The Cacao Company
 40.Monster Inc.
 55.Afala, Industrial Strength
 60.The North Company





share|improve this answer




















  • could you explain the command and how the back referencing works
    – Rashad
    Feb 16 at 1:28










  • @Rashad the pattern between ( and ) is captured, and then it is backreferenced as 1. See for example Regular Expression Reference: Capturing Groups and Backreferences
    – steeldriver
    Feb 16 at 1:34










  • You can omit the second colon: sed 's/(^[^:]*) .*/1/'
    – dessert
    Feb 16 at 7:44















up vote
1
down vote



accepted










If all of the lines begin with [0-9]* there's no need to match it explicitly: just capture up to (but not including) the : delimiter



sed 's/(^[^:]*) :.*/1/' file
 1.The Greater Company
 5.United Taxi Service
 31.The Cacao Company
 40.Monster Inc.
 55.Afala, Industrial Strength
 60.The North Company





share|improve this answer




















  • could you explain the command and how the back referencing works
    – Rashad
    Feb 16 at 1:28










  • @Rashad the pattern between ( and ) is captured, and then it is backreferenced as 1. See for example Regular Expression Reference: Capturing Groups and Backreferences
    – steeldriver
    Feb 16 at 1:34










  • You can omit the second colon: sed 's/(^[^:]*) .*/1/'
    – dessert
    Feb 16 at 7:44













up vote
1
down vote



accepted







up vote
1
down vote



accepted






If all of the lines begin with [0-9]* there's no need to match it explicitly: just capture up to (but not including) the : delimiter



sed 's/(^[^:]*) :.*/1/' file
 1.The Greater Company
 5.United Taxi Service
 31.The Cacao Company
 40.Monster Inc.
 55.Afala, Industrial Strength
 60.The North Company





share|improve this answer












If all of the lines begin with [0-9]* there's no need to match it explicitly: just capture up to (but not including) the : delimiter



sed 's/(^[^:]*) :.*/1/' file
 1.The Greater Company
 5.United Taxi Service
 31.The Cacao Company
 40.Monster Inc.
 55.Afala, Industrial Strength
 60.The North Company






share|improve this answer












share|improve this answer



share|improve this answer










answered Feb 16 at 1:19









steeldriver

31.5k34978




31.5k34978











  • could you explain the command and how the back referencing works
    – Rashad
    Feb 16 at 1:28










  • @Rashad the pattern between ( and ) is captured, and then it is backreferenced as 1. See for example Regular Expression Reference: Capturing Groups and Backreferences
    – steeldriver
    Feb 16 at 1:34










  • You can omit the second colon: sed 's/(^[^:]*) .*/1/'
    – dessert
    Feb 16 at 7:44

















  • could you explain the command and how the back referencing works
    – Rashad
    Feb 16 at 1:28










  • @Rashad the pattern between ( and ) is captured, and then it is backreferenced as 1. See for example Regular Expression Reference: Capturing Groups and Backreferences
    – steeldriver
    Feb 16 at 1:34










  • You can omit the second colon: sed 's/(^[^:]*) .*/1/'
    – dessert
    Feb 16 at 7:44
















could you explain the command and how the back referencing works
– Rashad
Feb 16 at 1:28




could you explain the command and how the back referencing works
– Rashad
Feb 16 at 1:28












@Rashad the pattern between ( and ) is captured, and then it is backreferenced as 1. See for example Regular Expression Reference: Capturing Groups and Backreferences
– steeldriver
Feb 16 at 1:34




@Rashad the pattern between ( and ) is captured, and then it is backreferenced as 1. See for example Regular Expression Reference: Capturing Groups and Backreferences
– steeldriver
Feb 16 at 1:34












You can omit the second colon: sed 's/(^[^:]*) .*/1/'
– dessert
Feb 16 at 7:44





You can omit the second colon: sed 's/(^[^:]*) .*/1/'
– dessert
Feb 16 at 7:44













up vote
-2
down vote













grep -Pioe 's*d+.s*(w+[.,]? )+:' file





share|improve this answer






















  • The question asks how to do this with back reference.   Does your answer use back reference?  Can you explain how?
    – G-Man
    Feb 16 at 4:22














up vote
-2
down vote













grep -Pioe 's*d+.s*(w+[.,]? )+:' file





share|improve this answer






















  • The question asks how to do this with back reference.   Does your answer use back reference?  Can you explain how?
    – G-Man
    Feb 16 at 4:22












up vote
-2
down vote










up vote
-2
down vote









grep -Pioe 's*d+.s*(w+[.,]? )+:' file





share|improve this answer














grep -Pioe 's*d+.s*(w+[.,]? )+:' file






share|improve this answer














share|improve this answer



share|improve this answer








edited Feb 16 at 2:36

























answered Feb 16 at 2:22









Budi

112




112











  • The question asks how to do this with back reference.   Does your answer use back reference?  Can you explain how?
    – G-Man
    Feb 16 at 4:22
















  • The question asks how to do this with back reference.   Does your answer use back reference?  Can you explain how?
    – G-Man
    Feb 16 at 4:22















The question asks how to do this with back reference.   Does your answer use back reference?  Can you explain how?
– G-Man
Feb 16 at 4:22




The question asks how to do this with back reference.   Does your answer use back reference?  Can you explain how?
– G-Man
Feb 16 at 4:22












 

draft saved


draft discarded


























 


draft saved


draft discarded














StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f424507%2fi-want-to-extract-part-of-a-line-using-sed-and-backreference%23new-answer', 'question_page');

);

Post as a guest
































































UDHLAfQ4 gn 2CkszZPr6jvti x0Utd5OsIvPyurSEDHDrMnZL 3xK1rg6FsSGq7 nXjv7IyN6t7,92jN5TwplzWoL
-
i 5qDwn5HFAZPcWsf 6 NvSF7g1QpkpH RQicpoVRgn6H9,NF2jX8 Tb5PdrG,a2wch yudUM jbtB94

Popular posts from this blog

How to check contact read email or not when send email to Individual?

Image
Clash Royale CLAN TAG #URR8PPP up vote 1 down vote favorite I'm using WordPress 4.9.8, CiviCRM to 5.5.1, I usually send email to contact by Search> Find contacts View contact details Action> Send email Send email ok, Contact received mail ok like picture But status only Email sent though contact read email or not. So, can CiviCRM can change status to Email read when contact read email? wordpress email share | improve this question asked Sep 26 at 0:12 ToanLuong 49 9 add a comment  |  up vote 1 down vote favorite I'm using WordPress 4.9.8, CiviCRM to 5.5.1, I usually send email to contact by Search> Find contacts View contact details Action> Send email Send email ok, Contact received mail ok like picture But status only Email sent though contact read email or not. So, can CiviCRM can change status to Email read when contact read email? wordpress email share | improve this questi...
Read more

How many registers does an x86_64 CPU actually have?

Image
Clash Royale CLAN TAG #URR8PPP up vote 2 down vote favorite I am currently learning reverse engineering and am studying the flags register. I had in my mind that rflags was just another name for one of the 16 general purpose registers, for example rax or rbx . But it looks like rflags is actually an additional register. So that makes 17 registers in total... how many more could there be? I have spent at least an hour on this and found numerous different answers. The best answer so far is this, which says that there are 40 registers in total. 16 General Purpose Registers 2 Status Registers 6 Code Segment Registers 16 SSE Registers 8 FPU/MMX Registers But if I add that up, I get 48. Could anybody provide an official answer on how many registers an x86_64 CPU has (e.g. an Intel i7). Additionally, I have seen references to 'hardware' and 'architectural' registers. What are those registers and how many are there? register x86-64 share | improve this...
Read more

Displaying single band from multi-band raster using QGIS

Image
Clash Royale CLAN TAG #URR8PPP 1 How can I extract a single band from multi-band raster in QGIS? I have an remote sensed image which has 6 bands (including NDVI band), I want to display each band separately, but have no idea how to do. I have seen some questions similar here but none worked for me. The original image (has 6 bands) is: I want to display the band 6 which should be like this: But I tried gdal_translate, and couldn't get the correct result. What I have got is: qgis raster multi-band share | improve this question edited Mar 5 at 0:53 Summer asked Mar 4 at 6:42 Summer Summer 23 6 Is this any help gis.stackexchange.com/questions/220658/… ? if not gis.stackexchange.com/questions/62133/… might help. – Michael Stimson Mar 4 at 6:46 Thanks for answering but when I used gdal_translate, qgis showed that 'Error 4: Kayena.tif: No such file or directory". Would you know how to fi...
Read more