Sed, last occurrence


 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers Sed, last occurrence
# 1  
Old 08-28-2013
Sed, last occurrence

How to find last occurrence of a keyword in a file using sed.
# 2  
Old 08-28-2013
Reverse the file using tac, find and print the keyword in sed and quit.
# 3  
Old 08-28-2013
Host doesn't have 'tac' command. For now what I tried is -

Code:
grep 'string' file | tail -1

Was wondering if sed might have a better way.
# 4  
Old 08-28-2013
Code:
sed -n '/string/h;${x;p;}' file

Hold the last occurrence of the pattern "string"; put "string" into the pattern and print.
This User Gave Thanks to xbin For This Post:
# 5  
Old 08-28-2013
Great Thanks! Exactly what I was looking for.
 
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

sed print from last occurrence match until the end of last occurrence match

Hi, i have file file.txt with data like: START 03:11:30 a 03:11:40 b END START 03:13:30 eee 03:13:35 fff END jjjjjjjjjjjjjjjjjjjjj START 03:14:30 eee 03:15:30 fff END ggggggggggg iiiiiiiiiiiiiiiiiiiiiiiii I want the below output START (13 Replies)
Discussion started by: Jyotshna
13 Replies

2. UNIX for Dummies Questions & Answers

Substitution in first occurrence with sed

I have the following script: sed '/string1/,/string2/!d' infile I want to apply the script to the first occurrence only. I have tried sed '0,/string1/,/string2/!d' infile Of course, that does not work Any help will be greatly appreciated (12 Replies)
Discussion started by: Xterra
12 Replies

3. Shell Programming and Scripting

Modifying sed to only change last occurrence.

I'm using sed to switch integers (one or more digits) to the other side of the ':' colon. For example: "47593:23421" would then be "23421:47593". The way it functions right now, it is messing my settings file to use with gnuplot. The current command is: sed 's/\(*\):\(*\)/\2:\1/' out3 >... (3 Replies)
Discussion started by: D2K
3 Replies

4. Shell Programming and Scripting

Sed diffrent replace by occurrence

I couldn't find the answer anywhere, so I hope you could help me. I need to change something like the following: something/bla/aaaa anything/bbb to: something --bla ----aaaa anything --bbb How do I do this? Is it possible with sed? I tried various patterns, but don't know how to... (5 Replies)
Discussion started by: Patwan
5 Replies

5. Shell Programming and Scripting

Replace x Number of String Occurrence with Sed

Ok, So I have a huge file that has over 12000 lines in it. in this file, there are 589 occurrences of the string "use five-minute-interval" spread in various areas in the file. How can i replace the the last 250 of the occurrences of "use five-minute-interval" with "use... (10 Replies)
Discussion started by: SkySmart
10 Replies

6. Shell Programming and Scripting

SED to replace exact match, not first occurrence.

Lets say I have file.txt: (Product:Price:QuantityAvailable) (: as delimiter) Chocolate:5:5 Banana:33:3 I am doing a edit/update function. I want to change the Quantity Available, so I tried using the SED command to replace 5, but my Price which is also 5 is changed instead. (for the Banana... (13 Replies)
Discussion started by: andylbh
13 Replies

7. Shell Programming and Scripting

Sed to print a string until the second occurrence of a character

Hi, I am totally new to shell scripting. I have a String "c:\working\html\index.txt.12-12-2009.bkp" I want to check if the string has more than one "." character. If it does I would like to retrieve only "c:\working\html\index.txt" i.e, discard the second occurrence of "." and the rest of the... (7 Replies)
Discussion started by: imr
7 Replies

8. Shell Programming and Scripting

Using sed to substitute first occurrence

I am trying to get rid of some ending tags but I run into some problems. Ex. How are you?</EndTag><Begin>It is fine.</Begin><New> Just about I am trying to get rid of the ending tags, starts with </ and ending with >. (which is </EndTag> and </Begin>) I tried the following sed... (2 Replies)
Discussion started by: quixoticking11
2 Replies

9. Shell Programming and Scripting

SED replace string by occurrence

hi all, I have a text file with following content PAGENUMBER asasasa asasasa PAGENUMBER sasasasasa PAGENUMBER using sed i want to replace PAGENUMBER by occurrence count eg 1 asasasa asasasa 2 sasasasasa 3 (4 Replies)
Discussion started by: uttamhoode
4 Replies

10. Shell Programming and Scripting

Grep for the same occurrence or maybe Sed

Hi, I have a file that looks like this dasdjasdjoasjdoasjdoa SYN dakspodkapsdka asdasdasdasdasdasdasd SYN sdfsdfsdfsdfdf shfishifhsdifhsidhfif fsdfsdfsdfsdfs sdfsdfsdfsdsdfsdfsdff cercercercerce sdasdajsdoajsodasodoo FIN dasdaskdpasdda... (4 Replies)
Discussion started by: hcclnoodles
4 Replies
Login or Register to Ask a Question