Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: extract text between two words on a single line
Top Forums UNIX for Dummies Questions & Answers extract text between two words on a single line Post 302512662 by ctsgnb on Monday 11th of April 2011 08:09:51 AM
Old 04-11-2011
This code assumes that
1) there is only one occurrence of 'b' per line
2) that f is at the end of the line

Code:
sed 's/^[^b]*//' infile

---------- Post updated at 02:03 PM ---------- Previous update was at 02:00 PM ----------

Code:
$ echo "a b c d e f"
a b c d e f
$ echo "a b c d e f" | sed 's/^[^b]*//'
b c d e f
$ echo "a c b d e f" | sed 's/^[^b]*//'
b d e f
$ echo "a c d b e f" | sed 's/^[^b]*//'
b e f
$

---------- Post updated at 02:06 PM ---------- Previous update was at 02:03 PM ----------

more generic :
Code:
sed 's/^[^b]*\(b.*f\).*/\1/' infile

---------- Post updated at 02:09 PM ---------- Previous update was at 02:06 PM ----------

Or ... depending on your need :

Code:
$ echo "a b d b c f e f" | sed 's/^[^b]*\(b.*f\).*/\1/'
b d b c f e f
$ echo "a b d b c f e f" | sed 's/^[^b]*\(b[^f]*f\).*/\1/'
b d b c f
$ echo "a b d b c f e f" | sed 's/^.*\(b[^f]*f\).*/\1/'
b c f
$ echo "a b d b c f e f" | sed 's/^.*\(b.*f\).*/\1/'
b c f e f
$

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Script to add a single line to middle of text file.

I've got a configuration file that is filled with xml text statements for example: <...../> <...../> <...../> <data id="java-options" value="-server -Djava.security.policy..../> <...../> <...../> <...../> I want to write a korn shell script that will go to this specific line and add a... (2 Replies)
Discussion started by: progkcp
2 Replies

2. Shell Programming and Scripting

grep multiple words in a single line

Hi.. How to search for multiple words in a single line using grep?. Eg: Jack and Jill went up the hill Jack and Jill were best friends Humpty and Dumpty were good friends too ---------- I want to extract the 2nd statement(assuming there are several statements with... (11 Replies)
Discussion started by: anduzzi
11 Replies

3. Shell Programming and Scripting

deleting blank line and row containing certain words in single sed command

Hi Is it possible to do the following in a single command /usr/xpg4/bin/sed -e '/rows selected/d' /aemu/CALLAUTO/callauto.txt > /aemu/CALLAUTO/callautonew.txt /usr/xpg4/bin/sed -e '/^$/d' /aemu/CALLAUTO/callautonew.txt > /aemu/CALLAUTO/callauto_new.txt exit (1 Reply)
Discussion started by: aemunathan
1 Replies

4. Shell Programming and Scripting

Help substituting text in a file having a single line but no newline char

Hello, Need help substituting a particular word in a file having a single line but no newline character at the end. I was trying to use sed but it doesn't work probably because there is no newline char at the end of the line. $ cat hlq_detail /outputs/alvan23/PDFs/bills $ cat... (5 Replies)
Discussion started by: Shan_u2005
5 Replies

5. Shell Programming and Scripting

Extract X words from end of line, minus last keynumber X

The file contains one line of text followed by a number. I want to take the number X at the end, take it out and display the last X words. X is the key telling me how many words from the end that I want and X will always be less than the number of words, so no problem there. Example input and... (4 Replies)
Discussion started by: fubaya
4 Replies

6. Shell Programming and Scripting

get the fifth line of a text file into a shell script and trim the line to extract a WORD

FOLKS , i have a text file that is generated automatically of an another korn shell script, i want to bring in the fifth line of the text file in to my korn shell script and look for a particular word in the line . Can you all share some thoughts on this one. thanks... Venu (3 Replies)
Discussion started by: venu
3 Replies

7. UNIX for Dummies Questions & Answers

Append a line to single column text file

I would like to add a line to the end of a single column text file. How do I go about doing that? Input: BEGIN 1 2 3 Output: BEGIN 1 2 3 END Thanks! (1 Reply)
Discussion started by: evelibertine
1 Replies

8. Shell Programming and Scripting

Command line: add text wrapper around words

I am trying to build a sinkhole for BIND. I created a master zone file for malicious domains and created a separate conf file, but I am stuck. I have a list of known bd domains that is updated nightly. The file simply contains the list of domains, one on each line: Bad.com Bad2.com... (4 Replies)
Discussion started by: uuallan
4 Replies

9. Shell Programming and Scripting

I need to extract uique words from text file

Hello programmers, I need to create a list of unique words from a text file using PERL...may i have the code for that please? Thank you (1 Reply)
Discussion started by: alsohari
1 Replies

10. UNIX for Beginners Questions & Answers

Shell - Read a text file with two words and extract data

hi I made this simple script to extract data and pretty much is a list and would like to extract data of two words separated by commas and I would like to make a new text file that would list these extracted data into a list and each in a new line. Example that worked for me with text file... (5 Replies)
Discussion started by: dandaryll
5 Replies

LEARN ABOUT LINUX

shtool-subst

SHTOOL-SUBST.TMP(1)					      GNU Portable Shell Tool					       SHTOOL-SUBST.TMP(1)

NAME

       shtool-subst - GNU shtool sed(1) substitution operations

SYNOPSIS

       shtool subst [-v|--verbose] [-t|--trace] [-n|--nop] [-w|--warning] [-q|--quiet] [-s|--stealth] [-i|--interactive] [-b|--backup ext]
       [-e|--exec cmd] [-f|--file cmd-file] [file] [file ...]

DESCRIPTION

       This command applies one or more sed(1) substitution operations to stdin or any number of files.

OPTIONS

       The following command line options are available.

       -v, --verbose
	   Display some processing information.

       -t, --trace
	   Enable the output of the essential shell commands which are executed.

       -n, --nop
	   No operation mode. Actual execution of the essential shell commands which would be executed is suppressed.

       -w, --warning
	   Show warning on substitution operation resulting in no content change on every file. The default is to show a warning on substitution
	   operations resulted in no content change on all files.

       -q, --quiet
	   Suppress warning on substitution operation resulting in no content change.

       -s, --stealth
	   Stealth operation. Preserve timestamp on file.

       -i, --interactive
	   Enter interactive mode where the user has to approve each operation.

       -b, --backup ext
	   Preserve backup of original file using file name extension ext.  Default is to overwrite the original file.

       -e, --exec cmd
	   Specify sed(1) command directly.

       -f, --file cmd-file
	   Read sed(1) command from file.

EXAMPLE

	#   shell script
	shtool subst -i -e 's;(c) ([0-9]*)-2000;(c) 1-2001;' *.[ch]

	#    RPM spec-file
	%install
	    shtool subst -v -n 
		-e 's;^(prefix=).*;1 $RPM_BUILD_ROOT%{_prefix};g' 
		-e 's;^(sysconfdir=).*;1 $RPM_BUILD_ROOT%{_prefix}/etc;g' 
		`find . -name Makefile -print`
	    make install

HISTORY

       The GNU shtool subst command was originally written by Ralf S.  Engelschall <rse@engelschall.com> in 2001 for GNU shtool.  It was prompted
       by the need to have a uniform and convenient patching frontend to sed(1) operations in the OpenPKG package specifications.

SEE ALSO

       shtool(1), sed(1).

18-Jul-2008							   shtool 2.0.8 					       SHTOOL-SUBST.TMP(1)
All times are GMT -4. The time now is 10:09 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy