Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: SED - Match a line from a File
Top Forums Shell Programming and Scripting SED - Match a line from a File Post 302425237 by angshuman_ag on Thursday 27th of May 2010 01:37:58 PM
Old 05-27-2010
Hi,
Why I need this is so that I can delete the matching line from the file. Or I should be able to replace it with a BLANK.

I saw that if I use option "d" in sed command, it echos all the lines except the given one.

Code:
`sed -n '\/usr\/bin\/7897.xcf/d' file.txt 2>&1`

So, if there is a variable, can I do the same thing with sed ? It will be lot more easier.

---------- Post updated at 11:07 PM ---------- Previous update was at 09:08 PM ----------

One solution could be -

In this example, we tell grep to look for "out dated"--with the space in the middle.
This command searches the file "myfile.new" for the text "out dated"--no matter whether upper-case or lower-case letters have been used--and puts all lines that do not have "out dated" in them into the file "myfile.newer".

Code:
grep -iv "out dated" myfile.new > myfile.newer

Courtsey
HTML Code:
http://www.udel.edu/topics/software/general/editors/unix/vi/delsearch.html
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

sed - Replace Line which contains the Pattern match with a new line

I need to replace the line containing "STAGE_DB" with the line "STAGE_DB $DB # database that contains the table being loaded ($workingDB)" Here $DB is passed during the runtime. How can I do this? Thanks, Kousikan (2 Replies)
Discussion started by: kousikan
2 Replies

2. Shell Programming and Scripting

Multiple line match using sed

Please help! Input pattern, where ... could be any number of lines struct A { Blah1 Blah2 Blah3 ... } B; output pattern struct AB { Blah1 Blah2 Blah3 ... }; I need help in extracting everything between { and } if it would have been on a single line { \(.*\)} should have worked. (15 Replies)
Discussion started by: SiftinDotCom
15 Replies

3. Shell Programming and Scripting

sed: find match and delete the line above

I am searching a dhcpd.conf to find the hardware ethernet match, then once the match is found delete just the line above it. For example: testmachine.example { hardware ethernet 00:00:00:00:00:00; fixed address 192.168.1.100; next-server 192.168.1.101; filename "linux-install/pxelinux.0"; }... (3 Replies)
Discussion started by: cstovall
3 Replies

4. Shell Programming and Scripting

SED - adding blank line after each Range Match

the following range matching works great but i wish to add a blank line after each range result set... which i've tried and researched to no avail MY INPUT DATA: CURRENT CODE I'M USING: sed -n '/*$/,/;/p' $INPUT_FILE RESULTS I'M GETTING: RESULT I looking to... (5 Replies)
Discussion started by: danmauer
5 Replies

5. Shell Programming and Scripting

Sed scripting, match text within line and replace

New to sed... Have a file foo.txt (below). Need to replace text on 2 lines, but can only feed sed the first few characters of each line (all lines are unique). So, in my example, I have put '$' in place of what I need to figure out how to feed the whole line. What I have thus far: sed -e... (6 Replies)
Discussion started by: boolean2222
6 Replies

6. Shell Programming and Scripting

SED, match a line block

Hello, I want to do a simple substitution using sed but I can't find a solution. Basically, from a Apache conf file, I would like to remove everything included between the <VirtualHost> and </VirtualHost> e.g SSLMutex file:/var/run/ssl_mutex <VirtualHost _default_:443> # A lot of config that... (5 Replies)
Discussion started by: RobertFord
5 Replies

7. Shell Programming and Scripting

I need to know how to replace a line after a pattern match with an empty line using SED

Hi How Are you? I am doing fine! I need to go now? I will see you tomorrow! Basically I need to replace the entire line containing "doing" with a blank line: I need to the following output: Hi How Are you? I need to go now? I will see you tomorrow! Thanks in advance.... (1 Reply)
Discussion started by: sags007_99
1 Replies

8. Shell Programming and Scripting

Awk-sed help : to remove first and last line with pattern match:

awk , sed Experts, I want to remove first and last line after pattern match "vg" : I am trying : # sed '1d;$d' works fine , but where the last line is not having vg entry it is deleting one line of data. - So it should check for the pattern vg if present , then it should delete the line ,... (5 Replies)
Discussion started by: rveri
5 Replies

9. Shell Programming and Scripting

Match pattern1 in file, match pattern2, substitute value1 in line

not getting anywhere with this an xml file contains multiple clients set up with same tags, different values. I need to parse the file for client foo, and change the value of tag "64bit" from false to true. cat clients.xml <Client type"FIX"> <ClientName>foo</ClientName>... (3 Replies)
Discussion started by: jack.bauer
3 Replies

10. Shell Programming and Scripting

Grep or sed - printing line only with exact match

Hello. In my script, some command return : q | kernel-default | package | 3.19.0-1.1.g8a7d5f9 | x86_64 | openSUSE-13.2-Kernel_stable_standard | kernel-default | package | 3.19.0-1.1.g8a7d5f9 | i586 | openSUSE-13.2-Kernel_stable_standard | kernel-default ... (3 Replies)
Discussion started by: jcdole
3 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 02:43 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy