sed doubt - search and substitute string from variable.
hi,
trying to learn more abt sed
i want to substitute a variable(a) with other variable(b) appended.
Read.txt contains:
Code:
home/test2/abc
home/test/root1
input.txt contains:
Code:
make test "home/test1/none"version="1.3"
wt's wrong test "home/test2/abc"version="1.0"
make save "home/test/root1"version="1.2"
make try "home/test3/user1"version="1.4"
code tried:
Code:
a=`cat read.txt`
for i in $a
do
b=_EDITED
sed -e "/$a/s///$a/$b/" input.txt
done
expected output:
Code:
make test "home/test1/none"version="1.3"
wt's wrong test "home/test2/abc_EDITED"version="1.0"
make save "home/test/root1_EDITED"version="1.2"
make try "home/test3/user1"version="1.4"
Thanks in advance
Last edited by dragon.1431; 09-22-2010 at 06:05 PM..
Reason: removed extra code tags
Hi, guys. I have one question:
I need to search for a string in a file, and then extract another string from the file and assign it to a variable.
For example:
the contents of the file (group) is below:
...
ftp:x:23:
mail:x:34
...
testing:x:2001
sales:x:2002
development:x:2003
...... (6 Replies)
Hi
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Hi this is "vinoth".
Hi happy to work with 'unix'
USA(united states of America)
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+++ 2013/03/28 17:01:37.085 SIGNALING HIGH ACTIVE
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ccc
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I try to replace a string of characters in a file (MyFile.txt) by a multiline value of the variable "Myvar":
$ cat MyFile.txt
DESCRIPTION '@TargetTable SCHEMA'
(
@InputFlowDef
);
$
The content of Myvar:
$ echo "$Myvar"
col1
, col2
, col3
$ (4 Replies)
I'm interested to match column pattern through awk using an external variable for data:
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Discussion started by: genome
7 Replies
LEARN ABOUT DEBIAN
path::dispatcher::match
Path::Dispatcher::Match(3pm) User Contributed Perl Documentation Path::Dispatcher::Match(3pm)NAME
Path::Dispatcher::Match - the result of a successful rule match
SYNOPSIS
my $rule = Path::Dispatcher::Rule::Tokens->new(
tokens => [ 'attack', qr/^w+$/ ],
block => sub {
my $match = shift;
attack($match->pos(2))
},
);
my $match = $rule->match("attack dragon");
# introspection
$match->path # "attack dragon"
$match->leftover # empty string (populated with prefix rules)
$match->rule # $rule
$match->positional_captures # ["attack", "dragon"] (decided by the rule)
$match->pos(1) # "attack"
$match->pos(2) # "dragon"
$match->run # attack("dragon")
DESCRIPTION
If a Path::Dispatcher::Rule successfully matches a path, it creates one or more "Path::Dispatcher::Match" objects.
ATTRIBUTES
rule
The Path::Dispatcher::Rule that created this match.
path
The path that the rule matched.
leftover
The rest of the path. This is populated when the rule matches a prefix of the path.
positional_captures
Any positional captures generated by the rule. For example, Path::Dispatcher::Rule::Regex populates this with the capture variables.
named_captures
Any named captures generated by the rule. For example, Path::Dispatcher::Rule::Regex populates this with named captures.
parent
The parent match object, if applicable (which may be set if this match is the child of, for exampl, a Path::Dispatcher::Rule::Under prefix)
METHODS
run
Executes the rule's codeblock with the same arguments.
pos($i)
Returns the $ith positional capture, 1-indexed.
perl v5.12.4 2011-08-30 Path::Dispatcher::Match(3pm)
09-22-2010
sed doubt - search and substitute string from variable.
