Re: list of all ´ls´ command-line switches/options

[gfp]

Hi,

Drew Adams has an other opinion:



Am 19.02.25 um 13:26 schrieb Tobias Geerinckx-Rice:

see the emails on the bottom (the first, I asked, is quite at the bottom, chronologically sorted)

Hi Gottfried,

Like almost all Linux distributions, Guix uses the ‘ls’ and many other 
fundamental commands from the GNU coreutils package.  These are the ones you'll 
see called ‘Linux commands’ in many silly tutorials, like ‘cp’, ‘mv’, etc.

Almost all GNU commands support the ‘--help’ option, which will print a list of 
all documented options as part of the usage instructions.  Those that don't 
(often CLI commands not written for the GNU project) support the traditional 
single-letter ‘-h’ switch which does the same thing.

So try ‘ls --help’, or ‘ls -h’!  It should be exhaustive.  And it's often 
easier to skim than the proper manual is…

However, it won't tell you which options Dired likes and which it does not.  I 
don't know if that's documented but if it is, that's Dired's job.

Kind regards,

T G-R

Sent on the go.  Excuse or enjoy my brevity.

---------------------------------------------------
This isn't an Emacs question.
Likely `M-x man RET ls RET' will give you the answer.
If not, consult the `ls' doc for your OS.

What Dired wants is the list of `ls' command-line
switches (also called options), e.g., -alF.

Dunno whether your `ls' command has switches that
show only the columns you want to show.  But it's
a question for your `ls', not for Emacs.
Drew Adams
----------------------------------------------------
Hi Drew,

You are right there are 2 possibilities:

1.
in customizing Dired there is a "Dired Listing Switches" option
it is set to :String: -al

That is written underneath:

Switches passed to ‘ls’ for Dired.  MUST contain the ‘l’ option. Hide
   May contain all other options that don’t contradict ‘-l’;
   may contain even ‘F’, ‘b’, ‘i’ and ‘s’.  See also the variable
   ‘dired-ls-F-marks-symlinks’ concerning the ‘F’ switch.

   If you have files with names with embedded newline characters, adding
   ‘b’ to the switches will allow Dired to handle those files better.

   Options that include embedded whitespace must be quoted
   like this: "--option=value with spaces"; you can use
   ‘combine-and-quote-strings’ to produce the correct quoting of
   each option.


   some of the ‘ls’ switches are not supported; see the doc string of
   ‘insert-directory’ in ‘ls-lisp.el’ for more details.


2.
If I open Dired with C-u C-x d there is in the Menu
"change ls switches":

 I pressed that:
in the minibuffer Ido comes up  with
New ls switches - must contain -l (current: -al) (-al):

I don´t know what to write there
----------------------------------------------------
No, not from Dired.  But depending on the `ls' command
for your OS, you can maybe do that.  You can (1) customize
option `dired-listing-switches' or (2) use `C-u' when you
invoke `dired', to provide the `ls' switches for a given
Dired listing. Drew Adams
-------------------------------------------------
Hi Drew,

in Dired+ you can toggle:
"Global Dired Hide Details Mode" (it is the last one in the list)

I found that you can hide everything except the directory/file name
or show everything.

Is there a possibility to hide only the first 3 columns,
drwxr-xr-x
user name
users

but show the last 3 columns:
size of the file/directory
Date
Directory/file name

thanks

Gottfried

On systems such as MS-DOS and MS-Windows, which use ‘ls’ emulation in Lisp,

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