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Full Discussion: find and replace a string in a file without the use of temp file
Top Forums Shell Programming and Scripting find and replace a string in a file without the use of temp file Post 302343951 by raghutapal on Friday 14th of August 2009 07:51:06 AM
Old 08-14-2009
Quote:
Originally Posted by panyam
Something like this :

Code:
perl -i -pe 's/OLD/NEW/ '  File_name.txt

Thanks Panyam.It works great.
Could you please explein me how the above command works.
I am new to perl

Thanks
Raghu

---------- Post updated at 06:51 AM ---------- Previous update was at 06:45 AM ----------

***************************************************

Thanks to vgersh99 for that example:
Code:
printf '1,$ s/OLD/NEW/g\nw! infile\nq!'| ex - infile

[/quote]

Thanks Vgersh.That works great.
Can you please explain me the above code in detail.I have never used such command to find replace a string in a file before

Regards
Raghu
 

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LEARN ABOUT DEBIAN

sql::translator::schema::procedure

SQL::Translator::Schema::Procedure(3pm) 		User Contributed Perl Documentation		   SQL::Translator::Schema::Procedure(3pm)

NAME

       SQL::Translator::Schema::Procedure - SQL::Translator procedure object

SYNOPSIS

	 use SQL::Translator::Schema::Procedure;
	 my $procedure	= SQL::Translator::Schema::Procedure->new(
	     name	=> 'foo',
	     sql	=> 'CREATE PROC foo AS SELECT * FROM bar',
	     parameters => 'foo,bar',
	     owner	=> 'nomar',
	     comments	=> 'blah blah blah',
	     schema	=> $schema,
	 );

DESCRIPTION

       "SQL::Translator::Schema::Procedure" is a class for dealing with stored procedures (and possibly other pieces of nameable SQL code?).

METHODS

   new
       Object constructor.

	 my $schema = SQL::Translator::Schema::Procedure->new;

   parameters
       Gets and set the parameters of the stored procedure.

	 $procedure->parameters('id');
	 $procedure->parameters('id', 'name');
	 $procedure->parameters( 'id, name' );
	 $procedure->parameters( [ 'id', 'name' ] );
	 $procedure->parameters( qw[ id name ] );

	 my @parameters = $procedure->parameters;

   name
       Get or set the procedure's name.

	 $procedure->name('foo');
	 my $name = $procedure->name;

   sql
       Get or set the procedure's SQL.

	 $procedure->sql('select * from foo');
	 my $sql = $procedure->sql;

   order
       Get or set the order of the procedure.

	 $procedure->order( 3 );
	 my $order = $procedure->order;

   owner
       Get or set the owner of the procedure.

	 $procedure->owner('nomar');
	 my $sql = $procedure->owner;

   comments
       Get or set the comments on a procedure.

	 $procedure->comments('foo');
	 $procedure->comments('bar');
	 print join( ', ', $procedure->comments ); # prints "foo, bar"

   schema
       Get or set the procedures's schema object.

	 $procedure->schema( $schema );
	 my $schema = $procedure->schema;

   equals
       Determines if this procedure is the same as another

	 my $isIdentical = $procedure1->equals( $procedure2 );

AUTHORS

       Ken Youens-Clark <kclark@cshl.org>, Paul Harrington <Paul-Harrington@deshaw.com>.

perl v5.14.2							    2012-01-18				   SQL::Translator::Schema::Procedure(3pm)
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