HardLinks and Softlinks Post: 302556440

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Top Forums Shell Programming and Scripting HardLinks and Softlinks Post 302556440 by ahmad.diab on Sunday 18th of September 2011 02:17:00 PM

09-18-2011

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Code:

you can control the permission by using "chmod" command , to create a soft link use "ln -s" command

---------- Post updated at 21:17 ---------- Previous update was at 21:15 ----------

Code:

Creating Hard and Symbolic Links
To create a symbolic link or a hard link, you use the same command name, In, which has the following syntax:

In [-fns] <source> [<target>]


Hard link is the default output of the ln command-that is, if you issue the ln command without the - s option, a hard link will be created.
 

In this command, <source> is the original file and <target> is the link that will be created and linked to the <source>. The options for the command are listed here:

-f (force). Link the file without questioning the user.

-n. If the <target> is an existing file, do not overwrite the content of the file. The -f option overrides this option.

-s. Create a symbolic link. The default is a hard link.

The hard links and symbolic links are compared in Table 4-2 

Table 4-2: Comparison of hard and soft links  Characteristic
 Hard Link
 Soft Link
 
Existence of original file
 You cannot create a hard link to a file that does not exist.
 You can create a symbolic link to a file that does not exist.
 
File systems
 A hard link cannot span file systems-that is, the link and the file it points to have to be in the same file system.
 A soft link can span file systems.
 
Kind of original file
 A hard link can only point to a file that is not a directory.
 A soft link can point to a file or a directory.
 
I-node
 A hard link has the same inode number as the file it points to.
 A soft link has a different inode from the file it points to.

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gnome2::canvas::shape

Gnome2::Canvas::Shape(3pm)				User Contributed Perl Documentation				Gnome2::Canvas::Shape(3pm)

NAME

       Gnome2::Canvas::Shape - Base class for canvas item shapes

HIERARCHY

	 Glib::Object
	 +----Glib::InitiallyUnowned
	      +----Gtk2::Object
		   +----Gnome2::Canvas::Item
			+----Gnome2::Canvas::Shape

METHODS

   pathdef = $shape->get_path_def
   $shape->set_path_def ($path_def)
       o   $path_def (Gnome2::Canvas::PathDef)

PROPERTIES

       'cap-style' (Gtk2::Gdk::CapStyle : default "butt" : readable / writable)
       'dash' (gpointer : default 0 : readable / writable)
       'fill-color' (string : default undef : writable)
       'fill-color-gdk' (Gtk2::Gdk::Color : default undef : readable / writable)
       'fill-color-rgba' (Glib::UInt : default 0 : readable / writable)
       'fill-stipple' (Gtk2::Gdk::Drawable : default undef : readable / writable)
       'join-style' (Gtk2::Gdk::JoinStyle : default "miter" : readable / writable)
       'miterlimit' (double : default 0 : readable / writable)
       'outline-color' (string : default undef : writable)
       'outline-color-gdk' (Gtk2::Gdk::Color : default undef : readable / writable)
       'outline-color-rgba' (Glib::UInt : default 0 : readable / writable)
       'outline-stipple' (Gtk2::Gdk::Drawable : default undef : readable / writable)
       'width-pixels' (Glib::UInt : default 0 : readable / writable)
       'width-units' (double : default 0 : readable / writable)
       'wind' (Glib::UInt : default 0 : readable / writable)

ENUMS AND FLAGS

   enum Gtk2::Gdk::CapStyle
       o   'not-last' / 'GDK_CAP_NOT_LAST'

       o   'butt' / 'GDK_CAP_BUTT'

       o   'round' / 'GDK_CAP_ROUND'

       o   'projecting' / 'GDK_CAP_PROJECTING'

   enum Gtk2::Gdk::JoinStyle
       o   'miter' / 'GDK_JOIN_MITER'

       o   'round' / 'GDK_JOIN_ROUND'

       o   'bevel' / 'GDK_JOIN_BEVEL'

SEE ALSO

       Gnome2::Canvas, Glib::Object, Glib::InitiallyUnowned, Gtk2::Object, Gnome2::Canvas::Item

COPYRIGHT

       Copyright (C) 2003-2004 by the Gtk2-Perl Team.

       This software is licensed under the LGPL; see Gnome2::Canvas for a full notice.

perl v5.14.2							    2011-11-16						Gnome2::Canvas::Shape(3pm)