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Full Discussion: What difference does * make here ? (ls command question)
Top Forums UNIX for Dummies Questions & Answers What difference does * make here ? (ls command question) Post 302692963 by kraljic on Tuesday 28th of August 2012 09:04:56 AM
Old 08-28-2012
What difference does * make here ? (ls command question)
Solaris 10 (korn shell)

I use -d option with ls command , when I want to suppress contents of the subdirectories being listed
when listing all the directories and files in a directory.

This is what man page says about -d option in ls command.

Code:
 -d           If an argument is a directory, lists  only  its name  (not its contents). 
               Often used with -l to get the status of a directory.

# Creating 2 files and 2 directories for testing

Code:
$ pwd
/tmp/stage_dir
$ ls
$ touch a.txt
$ touch b.txt
$ mkdir mysub_dir1
$ mkdir mysub_dir2
$
$ ls
a.txt       b.txt       mysub_dir1  mysub_dir2

A plain ls -d command will only list just a dot (.) which is understandable because current directory (dot) is just another file and -d option will suppress anything within it from being listed. My question is how the files and directories are listed when an asterik (*) is added . ie. ls -d *




Code:
$ ls -d
.

$ ls -dl
drwxrwxr-x   5 oracle   oinstall     512 Aug  4 23:41 .


$ ls -d *
a.txt       b.txt       mysub_dir1  mysub_dir2
$
$
$
$ ls -ld *
-rw-r--r--   1 oracle   oinstall       0 Aug 26 12:01 a.txt
-rw-r--r--   1 oracle   oinstall       0 Aug 26 12:01 b.txt
drwxr-xr-x   2 oracle   oinstall     512 Aug 26 12:01 mysub_dir1
drwxr-xr-x   2 oracle   oinstall     512 Aug 26 12:01 mysub_dir2

 

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LEARN ABOUT REDHAT

unix2dos

unix2dos(1)						      General Commands Manual						       unix2dos(1)

NAME

       unix2dos - UNIX to DOS text file format converter

SYNOPSYS

       unix2dos [options] [-c convmode] [-o file ...] [-n infile outfile ...]

       Options:

       [-hkqV] [--help] [--keepdate] [--quiet] [--version]

DESCRIPTION

       This manual page documents unix2dos, the program that converts text files in UNIX format to DOS format.

OPTIONS

       The following options are available:

       -h --help
	      Print online help.

       -k --keepdate
	      Keep the date stamp of output file same as input file.

       -q --quiet
	      Quiet mode. Suppress all warning and messages.

       -V --version
	      Prints version information.

       -c --convmode convmode
	      Sets conversion mode. Simulates unix2dos under SunOS.

       -o --oldfile file ...
	      Old file mode. Convert the file and write output to it. The program default to run in this mode. Wildcard names may be used.

       -n --newfile infile outfile ...
	      New  file  mode.	Convert the infile and write output to outfile. File names must be given in pairs and wildcard names should NOT be
	      used or you WILL lost your files.

EXAMPLES

       Get input from stdin and write output to stdout.

	      unix2dos

       Convert and replace a.txt. Convert and replace b.txt.

	      unix2dos a.txt b.txt

	      unix2dos -o a.txt b.txt

       Convert and replace a.txt in ASCII conversion mode.  Convert and replace b.txt in ISO conversion mode.

	      unix2dos a.txt -c iso b.txt

	      unix2dos -c ascii a.txt -c iso b.txt

       Convert and replace a.txt while keeping original date stamp.

	      unix2dos -k a.txt

	      unix2dos -k -o a.txt

       Convert a.txt and write to e.txt.

	      unix2dos -n a.txt e.txt

       Convert a.txt and write to e.txt, keep date stamp of e.txt same as a.txt.

	      unix2dos -k -n a.txt e.txt

       Convert and replace a.txt. Convert b.txt and write to e.txt.

	      unix2dos a.txt -n b.txt e.txt

	      unix2dos -o a.txt -n b.txt e.txt

       Convert c.txt and write to e.txt. Convert and replace a.txt.  Convert and replace b.txt. Convert d.txt and write to f.txt.

	      unix2dos -n c.txt e.txt -o a.txt b.txt -n d.txt f.txt

DIAGNOSTICS

BUGS

       The program does not work properly under MSDOS in stdio processing mode.  If you know why is that so, please tell me.

AUTHOR

       Benjamin Lin - ( blin@socs.uts.edu.au )

MISCELLANY

       Tested environment:

	      Linux 1.2.0 with GNU C 2.5.8

	      SunOS 4.1.3 with GNU C 2.6.3

	      MS-DOS 6.20 with Borland C++ 4.02

       Suggestions and bug reports are welcome.

SEE ALSO

       dos2unix(1)

1995.03.31							   unix2dos v2.2						       unix2dos(1)
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