Yes that is correct, #3 uses exact strings, so it correctly identifies the right field, and the sub() in itself isn't the problem either, since iteration occurs over the fields and not over the key value pairs (therefore it can substititute multiple occurrences on one line), but the problem is in the replacement part, it was attempting to use sub() on the record instead of a direct assignment to the field, to avoid losing the file separators.
This adaptation should fix that:
Last edited by Scrutinizer; 06-16-2019 at 06:37 AM..
This User Gave Thanks to Scrutinizer For This Post:
Sir,
I want to check for the repation of a user address in a file i used || as my delimiter and want to check repetaip0n of the address that is mailid and then i have to use IMAP and all.
How can i do this...
I am in linux ...and my file is linux file.
... (5 Replies)
Hello,
Can someone kindy help me solve this problem..I am using SunOS shell script
I got a file A with following content:
This is my correct document. I wrote 111
This is my incorrect word , 222
This is my wrong statement 333
This is my correct document 444
This is my correct document 555... (9 Replies)
lets see if i can explain this in a good way.
im trying to replace some words in a file but i need to know what the words are that is beeing replaced. not sure if sed can do this.
file.name.something.1DATA01.something.whatever
sed "s/./.DATA?????/g"
need to know what the first . is... (2 Replies)
Hi all
I have a file with below content (content is variable whenever new product is launched). I need form a grep command like this
egrep "Unknown product|Invalid symboland so on"
How to do it using a script?
Unknown product
Invalid symbol
No ILX exch found
exceeds maximum size
AFX... (4 Replies)
I want to replace a certain pattern with the variable already defined.
e.g.
set path_verilog = /home/priya/bin/verilogfile
my file contents are :
verilog new
verilog is defined here verilog_path_comes
I am using the below command
sed 's/verilog_path_comes/'$path_verilog'/g' <filename>... (2 Replies)
Hi all,
I have 2 files:
species-names.txt
Abaca-bunchy-top-virus ((((Abaca-bunchy-top-virus((Babuvirus((Unassigned((Nanoviridae((Unassigned))))
Abutilon-mosaic-virus ((((Abutilon-mosaic-virus((Begomovirus((Unassigned((Geminiviridae((Unassigned))))... (2 Replies)
Hello,
I would like to change my setting in a file to the setting that user input.
For example, by default it is
ONBOOT=ON
When user key in "YES", it would be
ONBOOT=YES
--------------
This code only adds in the entire user input, but didn't replace it.
How do i go about... (5 Replies)
I have the file like this.
cat 123.txt
<p> <table border='1' width='90%' align='center' summary='Script output'> <tr><td>text </td> </tr> </table> </p>
I want to replace some tags and want the output like below. I tried with awk & sed commands. But no luck. Could someone help me on this?
... (4 Replies)
Hi All,
I need one help to replace particular words in file based on if finds another words in that file .
i.e.
my self is peter@king.
i am staying at north sydney.
we all are peter@king.
How to replace peter to sham if it finds @king in any line of that file.
Please help me... (8 Replies)
Discussion started by: Rajib Podder
8 Replies
LEARN ABOUT HPUX
read
read(1) General Commands Manual read(1)NAME
read - read a line from standard input
SYNOPSIS
var ...
DESCRIPTION
reads a single line from standard input. The line is split into fields as when processed by the shell (refer to shells in the first field
is assigned to the first variable var, the second field to the second variable var, and so forth. If there are more fields than there are
specified var operands, the remaining fields and their intervening separators are assigned to the last var. If there are more vars than
fields, the remaining vars are set to empty strings.
The setting of variables specified by the var operands affect the current shell execution environment.
Standard input to can be redirected from a text file.
Since affects the current shell execution environment, it is usually provided as a normal shell special (built-in) command. Thus, if it is
called in a subshell or separate utility execution environment similar to the following, it does not affect the shell variables in the
caller's environment:
Options
recognizes the following options:
Do not treat a backslash character in any special way.
Consider each backslash to be part of the input line.
Opperands
recognizes the following operands:
var The name of an existing or nonexisting shell variable.
EXTERNAL INFLUENCES
Environment Variables
determines the internal field separators used to delimit fields.
RETURN VALUE
exits with one of the following values:
0 Successful completion.
>0 End-of-file was detected or an error occurred.
EXAMPLES
Print a file with the first field of each line moved to the end of the line.
while read -r xx yy
do
printf "%s %s
" "$yy" "$xx"
done < input_file
SEE ALSO csh(1), ksh(1), sh(1), sh-posix(1).
STANDARDS CONFORMANCE read(1)