Sed: add text if pattern not found Post: 302305670

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Delete a block of text delimited by blank lines when pattern is found

I have a file which contains blocks of text - each block is a multi-lines text delimited by blank lines eg. <blank line> several lines of text ... pattern found on this line several more lines of text ... <blank line> How do you delete the block of text (including the blank lines) when...

2. Shell Programming and Scripting

change line found by pattern using sed

I want to change a line like CPM_THRESHOLD 0.8 // to a new value using sed I am trying sed -i "s/CPM_THRESHOLD/CPM_THRESHOLD\t$COH\t\t\/\//" $INPUT_4 but how can i substitute the whole line begining with CPM_THRESHOLD and substitute it?

3. Shell Programming and Scripting

sed: Find start of pattern and extract text to end of line, including the pattern

This is my first post, please be nice. I have tried to google and read different tutorials. The task at hand is: Input file input.txt (example) abc123defhij-E-1234jslo 456ujs-W-abXjklp From this file the task is to grep the -E- and -W- strings that are unique and write a new file...

4. Shell Programming and Scripting

bash: need to have egrep to return a text string if the search pattern has NOT been found

Hello all, after spending hours of searching the web I decided to create an account here. This is my first post and I hope one of the experts can help. I need to resolve a grep / sed / xargs / awk problem. My input file is just like this: ----------------------------------...

5. Shell Programming and Scripting

To add a new line with specific text after the pattern is found using sed

hi guys, im trying to add the following line in my xml file <dbrollbacksegs <oa_var="s_db_rollback_segs">NOROLLBACK</dbrollbacksegs> when ever i find the following line <dbsharedpool oa_var="s_dbsharedpool_size">300000000</dbsharedpool> I have succedded till adding a new line...

6. Shell Programming and Scripting

Displaying text till pattern match found in a line

Hi All, From the below line if we want to display all the text till found pattern dot/. I was trying with the below code but couldn't able to print text before the pattern. it display texts which is found after pattern. awk '/assed/{print;getline;print}' file_name | sed 's/^*. *//' input...

7. Shell Programming and Scripting

If first pattern is found, look for second pattern. If second pattern not found, delete line

I had a spot of trouble coming up with a title, hopefully you'll understand once you read my problem... :) I have the output of an ldapsearch that looks like this: dn: cn=sam,ou=company,o=com uidNumber: 7174 gidNumber: 49563 homeDirectory: /home/sam loginshell: /bin/bash uid: sam...

8. Shell Programming and Scripting

Append text on particular line after pattern found

hi, i have /etc/inittab, I want to add another line after that when i find a pattern "l6:6:wait:/etc/rc.d/rc 6". original l6:6:wait:/etc/rc.d/rc 6 after-change l6:6:wait:/etc/rc.d/rc 6 /sbin/if-pp-to-cng

9. UNIX for Beginners Questions & Answers

Sed/awk join lines once pattern found

Hi all OS - RHEL6.4 I have input file -f1.txt I need to search line which starts with \Start and read next line till it gets blank line and join them all. I need to trim any trailing spaces for each line.So output.txt should be.. \Start\now\fine stepwatch this space for toolsends...

10. UNIX for Beginners Questions & Answers

Modify text file if found multiple pattern match for every line.

Looking for help, i have input file like below and want to modify to expected output, if can without create additional file, hope can direct modify it. have 2 thing need do. 1st is adding a word (testplan generation off) after ! ! IPG: Tue Aug 07 14:31:17 2018 2nd is adding...

LEARN ABOUT POSIX

timezone

TIMEZONE(3P)						     POSIX Programmer's Manual						      TIMEZONE(3P)

PROLOG

       This  manual page is part of the POSIX Programmer's Manual.  The Linux implementation of this interface may differ (consult the correspond-
       ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.

NAME

       timezone -- difference from UTC and local standard time

SYNOPSIS

       #include <time.h>

       extern long timezone;

DESCRIPTION

       Refer to tzset().

COPYRIGHT

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition, Standard for Information Technol-
       ogy  --	Portable  Operating  System  Interface (POSIX), The Open Group Base Specifications Issue 7, Copyright (C) 2013 by the Institute of
       Electrical and Electronics Engineers, Inc and The Open Group.  (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the
       event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Stan-
       dard is the referee document. The original Standard can be obtained online at http://www.unix.org/online.html .

       Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source
       files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html .

IEEE
/The Open Group						       2013							      TIMEZONE(3P)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Delete a block of text delimited by blank lines when pattern is found

Discussion started by: gleu

2. Shell Programming and Scripting

change line found by pattern using sed

Discussion started by: larne

3. Shell Programming and Scripting

sed: Find start of pattern and extract text to end of line, including the pattern

Discussion started by: TestTomas

4. Shell Programming and Scripting

bash: need to have egrep to return a text string if the search pattern has NOT been found

Discussion started by: bash4ever