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Full Discussion: ksh script - not getting output from ls
Top Forums UNIX for Dummies Questions & Answers ksh script - not getting output from ls Post 302735191 by sudon't on Friday 23rd of November 2012 05:44:50 PM
Old 11-23-2012
ksh script - not getting output from ls
Hi!
I'm a complete noob, and I'm trying to write a little script that takes a directory pathname as input from the CL, checks whether it exists, and if not creates it, then shows it worked using ls.
Everything works beautifully except in the first instance, wherein the directory is created, ls does not print its output. Running it in debug mode, it is clear that ls is executing, but I can't figure out why it doesn't show in stdout.
Code:
$ ksh -x ./newdir.ksh
+ print -n 'Name a directory that ought to exist: '
Name a directory that ought to exist: + read dir
Fun/Super/Duper/Pooper
+ [[ ! -d /Users/rick/Fun/Super/Duper/Pooper ]]
+ print 'Directory does not yet exist. I will make it so...'
Directory does not yet exist. I will make it so...
+ mkdir /Users/rick/Fun/Super/Duper/Pooper
+ ls -R /Users/rick/Fun/Super/Duper/Pooper

I've tried it a few different ways. I thought maybe ls was executing before mkdir finished, but && didn't help.
Code:
mkdir ~/$dir && ls -R ~/$dir

No sense going into all of them since none of them worked.
I've searched the web, and while there's a lotta info on redirecting to and from files, I couldn't find anything on making sure output directed to the screen. I guess because that would be the expected behavior. But I'm probably looking for the wrong thing. I'm such a complete noob, I don't know what to look for.
Anyway, it works fine in the second instance, where the directory already exists.
Code:
$ ./newdir.ksh
Name a directory that ought to exist: Fun
That directory does exist, as well it should.
Super

/Users/rick/Fun/Super:
Duper

/Users/rick/Fun/Super/Duper:
Pooper

/Users/rick/Fun/Super/Duper/Pooper:

Here is the script:

Code:
#!/bin/ksh

## If a directory does not exist, create it. Then let us see that it worked.

	print -n "Name a directory that ought to exist: "
read dir

if [[ ! -d ~/$dir ]]
then
	print "Directory does not yet exist. I will make it so..."
	mkdir ~/$dir
	ls -R ~/$dir

else
	print "That directory does exist, as well it should."
	ls -R ~/$dir
fi

No doubt I've overlooked something very fundamental and simple, but for the life of me, cannot figure it out.
 

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LEARN ABOUT OPENSOLARIS

gvfs-monitor-dir

gvfs-monitor-dir(1)						   User Commands					       gvfs-monitor-dir(1)

NAME

       gvfs-monitor-dir - monitor the change of a directory content using the VFS system

SYNOPSIS

       gvfs-monitor-dir URI

DESCRIPTION

       gvfs-monitor-dir  monitors  the change content of a directory using the VFS system. If anything changes inside the directory, gvfs-monitor-
       dir will print a message informing of the event.

OPERANDS

       The following operands are supported:

       URI	Specifies the directory location in standard URI format.

EXAMPLES

       Example 1: Monitor a local directory

       example% gvfs-monitor-dir file:///tmp/example

ENVIRONMENT VARIABLES

       See environ(5) for descriptions of the following environment variables: NLSPATH.

EXIT STATUS

       The exit value 0 is returned regardless of success or failure.

FILES

       The following files are used by this application:

       /usr/bin/gvfs-monitor-dir       Executable to monitor the change content of a directory using the VFS system.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWgnome-gvfs		   |
       +-----------------------------+-----------------------------+
       |Interface stability	     |Volatile			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       gvfs-copy(1), gvfs-info(1), gvfs-less(1), gvfs-ls(1), gvfs-mkdir(1) gvfs-cat(1), gvfs-monitor-file(1), gvfs-mount(1),  gvfs-move(1),  gvfs-
       rename(1), gvfs-open(1), gvfs-rm(1), gvfs-save(1), gvfs-trash(1), gvfs-tree(1), attributes(5), environ(5)

NOTES

       Written by Alvaro Lopez Ortega, Sun Microsystems Inc., 2008.

SunOS 5.11							    25 Mar 2008 					       gvfs-monitor-dir(1)
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