Soft links question Post: 302954426

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Top Forums UNIX for Dummies Questions & Answers Soft links question Post 302954426 by Aia on Monday 7th of September 2015 05:52:58 PM

09-07-2015

Registered User

Quote:

Originally Posted by jcdole

[...]

Code:

ln  -s  /main_dir2/sub_dir2-1  /main_dir1/A/B/C/sub_dir2-1

Now every things below "/main_dir1/A/B/C/sub_dir2-1" are soft link is not it ?
Nothing are copied from "/main_dir2sub_dir2-1" to "/main_dir1/A/B/C/sub_dir2-1" ?
I ask because nothing show that "file_2-1" and "file_2-2" are soft link files.
Thank you for helping

Hello jcdole,

file_2-1 and file_2-2 are not soft links, they are original files living under the subdirectory /main_dir2/sub_dir2-1.
On the other hand
/main_dir1/A/B/C/sub_dir2-1 is a link (or another name) for the same subdirectory /main_dir2/sub_dir2-1.

If you delete /main_dir1/A/B/C/sub_dir2-1, you are just deleting the link or second name, but not /main_dir2/sub_dir2-1
If you delete the content inside /main_dir1/A/B/C/sub_dir2-1/* you are deleting the originalfile_2-1 and file_2-2, and they will be gone, as well, when you look into /main_dir2/sub_dir2-1

Aia

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ppmtosixel

ppmtosixel(1)						      General Commands Manual						     ppmtosixel(1)

NAME

       ppmtosixel - convert a portable pixmap into DEC sixel format

SYNOPSIS

       ppmtosixel [-raw] [-margin] [ppmfile]

DESCRIPTION

       Reads  a  portable  pixmap  as input.  Produces sixel commands (SIX) as output.	The output is formatted for color printing, e.g. for a DEC
       LJ250 color inkjet printer.

       If RGB values from the PPM file do not have maxval=100, the RGB values are rescaled.  A printer control header and a color assignment table
       begin the SIX file.  Image data is written in a compressed format by default.  A printer control footer ends the image file.

OPTIONS

       -raw   If  specified,  each  pixel  will  be explicitly described in the image file.  If -raw is not specified, output will default to com-
	      pressed format in which identical adjacent pixels are replaced by "repeat pixel" commands.  A raw file is often an order	of  magni-
	      tude larger than a compressed file and prints much slower.

       -margin
	      If  -margin  is not specified, the image will be start at the left margin (of the window, paper, or whatever).  If -margin is speci-
	      fied, a 1.5 inch left margin will offset the image.

PRINTING

       Generally, sixel files must reach the printer unfiltered.  Use the lpr -x option or cat filename > /dev/tty0?.

BUGS

       Upon rescaling, truncation of the least significant bits of RGB values may result in poor color conversion.  If the original PPM maxval was
       greater	than  100,  rescaling  also reduces the image depth.  While the actual RGB values from the ppm file are more or less retained, the
       color palette of the LJ250 may not match the colors on your screen.  This seems to be a printer limitation.

SEE ALSO

       ppm(5)

AUTHOR

       Copyright (C) 1991 by Rick Vinci.

								   26 April 1991						     ppmtosixel(1)