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Full Discussion: check if file is empty
Top Forums Shell Programming and Scripting check if file is empty Post 84418 by zazzybob on Saturday 24th of September 2005 05:45:09 AM
Old 09-24-2005
Quote:
Originally Posted by vino
Code:
#! /bin/ksh

if [[ -s $FILE ]] ; then
echo "$FILE has data."
else
echo "$FILE is empty."
fi ;

vino
an exit status of 1 indicates that the FILE is empty or the file does not exist.....

Code:
$ ls
$ touch file_1
$ dd if=/dev/zero of=$HOME/tmp/file_2 bs=1 count=100
100+0 records in
100+0 records out
$ ls -l file_1 file_2 file_3
ls: file_3: No such file or directory
-rw-rw-r--  1 foo bar   0 Sep 24 20:28 file_1
-rw-rw-r--  1 foo bar 100 Sep 24 20:28 file_2
$ [[ -s file_1 ]]
$ echo $?
1
$ [[ -s file_2 ]]
$ echo $?
0
$ [[ -s file_3 ]]
$ echo $?
1

Cheers
ZB
 

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LEARN ABOUT OPENSOLARIS

vino-preferences

vino-preferences(1)						   User Commands					       vino-preferences(1)

NAME

       vino-preferences - remote desktop configuration

SYNOPSIS

       vino-preferences [gnome-std-options]

DESCRIPTION

       vino-preferences  is  the  configuration  dialog for remote desktop server.  vino-preferences provides a GUI to configure options of remote
       desktop server, include view-only mode and control mode for desktop sharing. And it also be used to configure the security mode and specify
       user password.

       There  are  some  check boxes in vino preferences dialog. the four check boxes are divided into 2 groups: Sharing and Security. The Sharing
       group controls if the server allow other users to view your desktop and if the server allow other users to control your desktop.  The Secu-
       rity  group  control what kind of security method the server will take when there is a remote request. Vino server can be configured to ask
       user confirm every time there is a connection request, and the server also can be configured to require users to provide password  for  the
       remote access. A password editbox is provided to input server password. This password will be saved in gnome keyring.

OPTIONS

       The following options are supported:

       gnome-std-options       Standard options available for use with most GNOME applications.  See gnome-std-options(5) for more information.

EXAMPLES

       Example 1: Start the vino preferences dialog from command line

       example% vino-preferences

FILES

       The following files are used by this application:

	    /usr/bin/vino-preferences

	    The executable file for the vino preferences application.

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWgnome-remote-desktop	   |
       +-----------------------------+-----------------------------+
       |Interface stability	     |Volatile			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       vino-passwd(1), vino-server(1), attributes(5), gnome-std-options(5)

NOTES

       Written by Steven Zhang, Sun Microsystems Inc., 2006, 2007.

       Updated by Halton Huo, Sun Microsystems Inc., 2008.

SunOS 5.11							    15 Aug 2008 					       vino-preferences(1)
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