Sponsored Content
Full Discussion: Help with sed replacment
Top Forums UNIX for Beginners Questions & Answers Help with sed replacment Post 303007147 by landrjos on Sunday 12th of November 2017 03:43:02 PM
Old 11-12-2017
Help with sed replacment

Hi All,

I am new to Unix and have a simple question. I would like to do three sed replacements in a large text file. The command I am using is as follows....

Code:
sed –n –e ‘s/:A/:X/’ –e ‘s/:B/:Y/’ –e ‘s/:C/:Z/’ myfile.txt > myfile_SED.txt

The : need to be the search to identify specific :A, :B, :C in the files from A, B, C and replace with :X, :Y, :Z.
When I run the command it creates the myfile_SED.txt but it is 0 bytes when done. I tried to edit the file without output using this command....
Code:
sed –n –e ‘s/:A/:X/’ –e ‘s/:B/:Y/’ –e ‘s/:C/:Z/’ myfile.txt

But when I run the command, and check the file after compete, I don't see any changes. Can someone help me figure out why sed is not making the replacements?
Thanks,
jos.

Last edited by Scrutinizer; 11-12-2017 at 05:13 PM.. Reason: code tags
 

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Issue with a sed one liner variant - sed 's/ ; /|/g' $TMP1 > $TMP

Execution of the following segment is giving the error - Script extract:- OUT=$DATADIR/sol_rsult_orphn.bcp TMP1=${OUT}_tmp1 TMP=${OUT}_tmp ( isql -w 400 $dbConnect_OPR <<EOF select convert(char(10), s.lead_id) +'|' + s.pho_loc_type, ";", s.sol_rsult_cmnt, ";", +'|'+ s.del_ind... (3 Replies)
Discussion started by: kzmatam
3 Replies

2. Shell Programming and Scripting

sed over writes my original file (using sed to remove leading spaces)

Hello and thx for reading this I'm using sed to remove only the leading spaces in a file bash-280R# cat foofile some text some text some text some text some text bash-280R# bash-280R# sed 's/^ *//' foofile > foofile.use bash-280R# cat foofile.use some text some text some text... (6 Replies)
Discussion started by: laser
6 Replies

3. Shell Programming and Scripting

deleting text records with sed (sed paragraphs)

Hi all, First off, Thank you all for the knowledge I have gleaned from this site! Deleting Records from a text file... sed paragraphs The following code works nearly perfect, however each time it is run on the log file it adds a newline at the head of the file, run it 5 times, it'll have 5... (1 Reply)
Discussion started by: Festus Hagen
1 Replies

4. UNIX for Dummies Questions & Answers

SED: Can't Repeat Search Character in SED Output

I'm not sure if the problem I'm seeing is an artifact of sed or simply a beginner's mistake. Here's the problem: I want to add a zero-width space following each underscore between XML tags. For example, if I had the following xml: <MY_BIG_TAG>This_is_a_test</MY_BIG_TAG> It should look like... (8 Replies)
Discussion started by: rhetoric101
8 Replies

5. Shell Programming and Scripting

How to use sed to replace the a string in the same file using sed?

How do i replace a string using sed into the same file without creating a intermediate file? (7 Replies)
Discussion started by: gomes1333
7 Replies

6. SCO

sco 5.0.5 5.0.6 openscource replacment ?

is there a version of anything linux distro that could clone/emulate sco close enough to run the 1 software program we keep this server for ? boil this question down some if a program is running on a sco system now are there any alternatives ? (2 Replies)
Discussion started by: crosbymook
2 Replies

7. Emergency UNIX and Linux Support

disk replacment, SUN M3000

we have a SUN M3000 server. setup as only 1 domain. disk c0t0d0 and c0t1d0 and setup as SVM mirrors. a few days ago disk T1 failed. new we have replaced the disk, but can's see the disk in format. have done cfgadm and devfsadm. still can't access the new disk in format. the output... (6 Replies)
Discussion started by: robsonde
6 Replies

8. Shell Programming and Scripting

sed and awk giving error ./sample.sh: line 13: sed: command not found

Hi, I am running a script sample.sh in bash environment .In the script i am using sed and awk commands which when executed individually from terminal they are getting executed normally but when i give these sed and awk commands in the script it is giving the below errors :- ./sample.sh: line... (12 Replies)
Discussion started by: satishmallidi
12 Replies

9. Shell Programming and Scripting

I am learning regular expression in sed,Please help me understand the use curly bracket in sed,

I am learning SED and just following the shell scripting book, i have trouble understanding the grep and sed statement, Question : 1 __________ /opt/oracle/work/antony>cat teledir.txt jai sharma 25853670 chanchal singhvi 9831545629 anil aggarwal 9830263298 shyam saksena 23217847 lalit... (7 Replies)
Discussion started by: Antony Ankrose
7 Replies
NWBPSET(1)							      nwbpset								NWBPSET(1)

NAME
nwbpset - Create a bindery property or set its value SYNOPSIS
nwbpset [ -h ] [ -S server ] [ -U user name ] [ -P password | -n ] [ -C ] DESCRIPTION
nwbpset Reads a property specification from the standard input and creates and sets the corresponding property. The format is determined by the output of 'nwbpvalues -c'. nwbpset will hopefully become an important part of the bindery management suite of ncpfs, together with 'nwbpvalues -c'. See util/nwbpsecurity for an example. As another example, look at the following command line: nwbpvalues -t 1 -o supervisor -p user_defaults -c | sed '2s/.*/ME/'| sed '3s/.*/LOGIN_CONTROL/'| nwbpset With this command, the property user_defaults of the user object 'supervisor' is copied into the property login_control of the user object 'me'. nwbpvalues -t 1 -o me -p login_control -c | sed '9s/.*/ff/'| nwbpset This command disables the user object me. Feel free to contribute other examples! nwbpset looks up the file $HOME/.nwclient to find a file server, a user name and possibly a password. See nwclient(5) for more information. Please note that the access permissions of $HOME/.nwclient MUST be 600 for security reasons. OPTIONS
-h -h is used to print out a short help text. -S server server is the name of the server you want to use. -U user user is the user name to use for login. -P password password is the password to use for login. If neither -n nor -P are given, and the user has no open connection to the server, nwbpset prompts for a password. -n -n should be given if no password is required for the login. -C By default, passwords are converted to uppercase before they are sent to the server, because most servers require this. You can turn off this conversion by -C. AUTHORS
nwbpset was written by Volker Lendecke. See the Changes file of ncpfs for other contributors. nwbpset 8/7/1996 NWBPSET(1)
All times are GMT -4. The time now is 04:02 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy