Extract substring using regular expression on a Unix file. I am attempting to get a the substring of a string using sed since it seemed the best solution for this. This is a very simple task but I have tried lots of combinations and have failed. Extract substring using sed: hweontey: Linux - Newbie: 1: 02-22-2011 04:27 AM: extract substring using sed and regular expressions (regexp) lindylex: Programming: 20: 12-22-2009 11:41 AM: sed - regular expression: Vilmerok: Programming: 5: 02-26-2009 09:44 AM: sed regular expression: Ammad: Linux - General: 7: 10-29-2008 06:52 PM: Extract … shawnamiller: Programming: 8: 04-30-2010 12:46 PM: extract substring using sed and regular expressions (regexp) lindylex: Programming: 20: 12-22-2009 11:41 AM: Extract … Rep: extract substring using sed and regular expressions (regexp) [ Log in to get rid of this advertisement] I would like to extract a number substring using sed. I would like to extract a number substring using sed. echo "ifeelfat398pounds" | sed -n -e '/[0-9]/,/[0-9]/p' This is a very simple task but. Is there any way to extract part of string/sentence, given only the from and to index of starting and ending position of the substring? Notice the parenthesis signs need to be escaped inside the sed expression. Leave a Comment Cancel reply. Example: I am attempting to get a the substring of a string using sed since it seemed the best solution for this. Hi, I have looked all over for this. 2020/11/28 2020/11/28 - Dallas-World Wide Web. Active 10 months ago. How to extract the substring using regex given only the index? This tutorial is meant as a brief introductory guide to sed that will help give the beginner a solid foundation regarding how sed works. *\)game/\1/p' OUTPUT: 12343. and so on." Hi, I have looked all over for this. echo 'nice12343game' | sed -n 's/nice\(. echo "ifeelfat398pounds" | sed -n -e '/ [0-9]/,/ [0-9]/p'. use sed to extract a substring using regular expressions. grep and sed are probably the tools you want, depending on the structure of text. for example, if you want to find a substring of digits that starts with a "#" sign, you could write something like: sed 's/^. 16. the "+" requires at least one occurrence and \d is a synonym for [0-9] see www.regular-expressions.info EDIT: I tried your command, which returned the entire line, leading me to believe that sed's behavior is to return any line that matches, when given as you had it. Bash extract substring from file The regular expression is a basic regular expression, and in addition you need to quote the delimiter for the s command. I have a file containing the following . *#\([0-9]\+\)/\1/g' … You must be logged in to post a … You'll have to quote that character instead, but usually the point of changing the delimiter is to pick one that doesn't occur in either the text to replace … Ask Question Asked 7 years, 3 months ago. Extract substring using sed: hweontey: Linux - Newbie: 1: 02-22-2011 04:27 AM [SOLVED] Extract multiple lines of data from a text file. I have a string where I need to extract a substring from, but the end of my regex is repeated. Sed extract substring. How to use sed to extract substring. Viewed 153k times 58. I would like to sed to stop at the first instance of the end of my regex, much like instr() functions in many languages return the first instance. "and" and "or" are unique in the … For example my string is: "zzz foo to you and bar123 or foo" I would like to extract the text between "and" and "or" (it could be anything, but that was my test string). extract substring from string in C: baddah: Programming: 6: 02-02-2010 04:22 AM: Sed/awk help with regular expressions needed: AP81: Programming: 3: 07-28-2008 07:26 AM: Extract substring matching a regular expression: tikit: Linux - General: 2: 02-18-2008 01:47 PM: Replace substring with SED: marri: Programming: 2: 07-09-2005 05:18 PM: Sed … sed should do the trick, if you do not know what the substring is, but know some pattern that is around it. You can pick a different delimiter to avoid having to quote / . ... Browse other questions tagged sed grep awk regular-expression or ask your own question. Ask Question Asked 7 years, ... How can I use regular expression on this file such that I get the output such as. 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