sed command to replace a line in a file using line number from the output of a pipe.
Sed command to replace a line in a file using line number from the output of a pipe.
Is it possible to replace a whole line piped from someother command into a file at paritcular line...
here is some basic execution flow..
Code:
the line number is 412
lineNo=412
Now i have a line coming as output from another command. for simplicity lets say i am
displaying contents of a file at particular line number
Code:
cat fileName.txt | sed -n ${lineNo}p | some sed replacement command goes here | "HERE SHOULD BE MY SED COMMAND which should replace the line 412 with the input got from previous command.
Is it feasible?
If not is there a way to output the command to a file(which obviously will have only one line) then take this as input and replace it at line 412 in the original fileName.txt file.
i want to redirect output of one command as the command line argument of another script
for example, say i would run this command:
find . -xdev -type f -size +4096 -exec ls -al {} \;
i wan to be able to do something like:
echo +4096 | find . -xdev -type f -size ****** -exec... (3 Replies)
Hello,
I have a file and in that, I want to search for a aprticular word and then replace another word in the same line with something else.
Example: In file abc.txt, there is a line
<host oa_var="s_hostname">test</host>
I want to search with s_hostname text and then replace test with... (2 Replies)
Okay, title is kind of confusion, but basically, I have a lot of scripts on a server that I need to replace a ps command, however, the new ps command I'm trying to replace the current one with pipes to sed at one point. So now I am attempting to create another script that replaces that line.
... (1 Reply)
Hi all .... vexing problem here ...
I am using sed to replace some special characters in a .txt file:
sed -e 's/_<ED>_/_355_/g;s/_<F3>_/_363_/g;s/_<E1>_/_341_/g' filename.txt
This command replaces <ED> with í , <F3> with ó and <E1> with á.
When I run the command to standard output, it works... (1 Reply)
i have few lines in a file... i am reading them in a while loop so a particular line is held is $line1.. consider a modified line is held in $line2.... i want to replace $line1 with $line2 in the same file... how to do it..?
i have come up till the below code
sed "s/$line1/$line2/g" tmpfile.sql... (5 Replies)
Hi,
I have been trying to replace the key word
"SQL> spool off "
with
"/
show errors"
with out double quotes in all the files in a directory.
above show erros should be displayed next line
Could you please help me how to do that.
I have tried something like this... (3 Replies)
Hi,
I have a set of files in a directory that I have to read and replace the first occurrence of a number with another dummy number. This is what I have so far but it does not seem to work. The files have lot of other data in each row and each data element is separated by ,@,
for file in... (13 Replies)
my requirement is,
consider a file output
cat output
blah sdjfhjkd jsdfhjksdh
sdfs 23423 sdfsdf sdf"sdfsdf"sdfsdf"""""dsf
hellow there
this doesnt look good
et cetc etc
etcetera
i want to replace a line of line number 4 ("this doesnt look good") with some other line
... (3 Replies)
I am working on a script to convert bank data to a csv file. I have the format done - columns etc. The final piece of the puzzle is to change the second field (after the R) of every line to reflect its' line number in the file. I am stumped. I can use awk on each line but need help looping through... (9 Replies)
Hi all,
I am fairly new to UNIX and I was wondering if you could provide me with some help! Lets say i have a file as below :
Line 1
Line 2
Line 3
ABC|12|4|2
Now the number 4 in bold, this number will represent the number of row there is in the file excluding the header and footer... (10 Replies)
Discussion started by: Stinza
10 Replies
LEARN ABOUT LINUX
replace
REPLACE(1) MySQL Database System REPLACE(1)NAME
replace - a string-replacement utility
SYNOPSIS
replace arguments
DESCRIPTION
The replace utility program changes strings in place in files or on the standard input.
Invoke replace in one of the following ways:
shell> replace from to [from to] ... -- file_name [file_name] ...
shell> replace from to [from to] ... < file_name
from represents a string to look for and to represents its replacement. There can be one or more pairs of strings.
Use the -- option to indicate where the string-replacement list ends and the file names begin. In this case, any file named on the command
line is modified in place, so you may want to make a copy of the original before converting it. replace prints a message indicating which
of the input files it actually modifies.
If the -- option is not given, replace reads the standard input and writes to the standard output.
replace uses a finite state machine to match longer strings first. It can be used to swap strings. For example, the following command swaps
a and b in the given files, file1 and file2:
shell> replace a b b a -- file1 file2 ...
The replace program is used by msql2mysql. See msql2mysql(1).
replace supports the following options.
o -?, -I
Display a help message and exit.
o -#debug_options
Enable debugging.
o -s
Silent mode. Print less information what the program does.
o -v
Verbose mode. Print more information about what the program does.
o -V
Display version information and exit.
COPYRIGHT
Copyright (C) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
This documentation is free software; you can redistribute it and/or modify it only under the terms of the GNU General Public License as
published by the Free Software Foundation; version 2 of the License.
This documentation is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with the program; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or see http://www.gnu.org/licenses/.
SEE ALSO
For more information, please refer to the MySQL Reference Manual, which may already be installed locally and which is also available online
at http://dev.mysql.com/doc/.
AUTHOR
Oracle Corporation (http://dev.mysql.com/).
MySQL 5.5 01/30/2014 REPLACE(1)
07-16-2014
