HardLinks and Softlinks Post: 302556443

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Top Forums Shell Programming and Scripting HardLinks and Softlinks Post 302556443 by agama on Sunday 18th of September 2011 02:19:27 PM

09-18-2011

Registered User

I'll initially point you to the ln man page for all of the good details

Man Page for ln (FreeBSD Section 1) - The UNIX and Linux Forums

The -f option (force) has a different description depending on your flavour of *NIX. In general it causes the link to be created regardless. At least one of the man pages indicates that it "removes existing destination files", so see the version of the man page for your system to know exactly what the option should do.

I've always thought of the link command in this manner:

Code:

 ln <existing-file> <new-link-to-existing>

rather than source and destination. So, if you have a file foo, and want to create a link l_foo, the command would be:

Code:

ln foo l_foo

Whether or not you need the -f option depends on your system, whether or not you have write access to the existing file and maybe other factors.

A hard link is another directory reference to the exising file. It can be in the same directory as the first/other reference(s) or it can be in a different directory as long as that directory exists on the same physical filesystem. After you create the hard link to foo, executing ls -al foo will show that the link count (usually the value in column two of the output) has increased (probably 2).

Hope this makes things a bit clearer.

agama

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gnome2::canvas::line

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

NAME

       Gnome2::Canvas::Line - Lines as CanvasItems

HIERARCHY

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

PROPERTIES

       'arrow-shape-a' (double : default 0 : readable / writable)
       'arrow-shape-b' (double : default 0 : readable / writable)
       'arrow-shape-c' (double : default 0 : readable / writable)
       'cap-style' (Gtk2::Gdk::CapStyle : default "butt" : readable / writable)
       'fill-color' (string : default undef : readable / 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)
       'first-arrowhead' (boolean : default false : readable / writable)
       'join-style' (Gtk2::Gdk::JoinStyle : default "miter" : readable / writable)
       'last-arrowhead' (boolean : default false : readable / writable)
       'line-style' (Gtk2::Gdk::LineStyle : default "solid" : readable / writable)
       'points' (Gnome2::Canvas::Points : default undef : readable / writable)
       'smooth' (boolean : default false : readable / writable)
       'spline-steps' (Glib::UInt : default 12 : readable / writable)
       'width-pixels' (Glib::UInt : default 0 : readable / writable)
       'width-units' (double : 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'

   enum Gtk2::Gdk::LineStyle
       o   'solid' / 'GDK_LINE_SOLID'

       o   'on-off-dash' / 'GDK_LINE_ON_OFF_DASH'

       o   'double-dash' / 'GDK_LINE_DOUBLE_DASH'

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::Line(3pm)