Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: How to check if export DISPLAY is set or not?
Top Forums Shell Programming and Scripting How to check if export DISPLAY is set or not? Post 302373411 by Scott on Friday 20th of November 2009 07:26:45 AM
Old 11-20-2009
Hi.

No, you can use it as-is. Place it near the top of your script.

If DISPLAY is not exported, your script won't see it and this will print a message and exit.

It's the same as
Code:

if [ -z "$DISPLAY" ]; then
  echo Display not set
  exit 1
fi

If you need to check for a specific value in DISPLAY, you can try this:

Code:
[ "$DISPLAY" != "same_host:0.0"  ] && echo Display not set && exit 1

 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

export DISPLAY and XPM´s

Hi! I´ve an application that runs in a Digital Tru64, exporting display to a Linux host. That application blinks a icon (in XPM mode) when the severity mode changes. When I put a backdrop(XPM, too) in that screen, the icons blink slowly. When I remove it, they turn to blink quickly. I have... (3 Replies)
Discussion started by: selina
3 Replies

2. Shell Programming and Scripting

do a export DISPLAY

hello to begin i sorry for my english because i'am french so: someone can explain me to do a export DIPLAY with a web page (php) i have test the php function exec (myscriptshell.sh) but he can't do the export diplay. if someone have a solution . bye (1 Reply)
Discussion started by: the_nul
1 Replies

3. UNIX for Dummies Questions & Answers

difference between set and export

Hi, can anybody tell me what is the difference between set and export in unix. -Ashish (1 Reply)
Discussion started by: shriashishpatil
1 Replies

4. UNIX for Dummies Questions & Answers

How to export the Display variable

I'm trying to open an xwindow on my Sun server. What am I doing wrong? # echo $SHELL /sbin/sh # # export DISPLAY=localhost:0.0 DISPLAY=localhost:0.0: is not an identifier Thank you! (1 Reply)
Discussion started by: FredSmith
1 Replies

5. Solaris

Cant export display from aix to solaris.

Hi Frnds, i face a peculiar issue. I am managing 200 Aix workstations and 20 sun boxes. I am not anle to export the display from aix workstations to sun box, But vice versa it is working fine. But if i try to export the display to a sun box from other sun box it works perfectly. Could... (3 Replies)
Discussion started by: sriram.s
3 Replies

6. Shell Programming and Scripting

use of set, export and typeset

what is the difference in usage of set, export, typeset while declaring a value to a variable can any one help thanks (0 Replies)
Discussion started by: trichyselva
0 Replies

7. UNIX for Advanced & Expert Users

export display

hello frnds, I want to export display of othe terminal to my terminal and want to post a msg, which should visible at other terminal, I tried myself, but couldnt get it plz help me to get solution (1 Reply)
Discussion started by: sushant.pathade
1 Replies

8. Solaris

export DISPLAY

rsh to host2 from host1 and from host2 rsh into host3 Is it possible to display a GUI from host3 through host2 and onto host1? (1 Reply)
Discussion started by: eddiet
1 Replies

9. UNIX for Advanced & Expert Users

DISPLAY=local_host:0.0 ; export DISPLAY

Hi, from my Windows Workstation I can connect with PUTTY to an AIX 6.1 unix server. On AIX via PUTTY I run DBCA which has a grphical interface. Then : #DISPLAY=local_host:0.0 ; export DISPLAY $(hostname) $(whoami):/appli/oracle/product/10.2.0/db_1/bin#dbca _X11TransSocketINETConnect()... (12 Replies)
Discussion started by: big123456
12 Replies

10. Solaris

export vs env vs set commands

Hi I'm trying to understand variable scopes in solaris10. It is said that to display env variables we use 3 commands : - env - set - export What is the difference between them ? thx for help. ---------- Post updated at 11:00 AM ---------- Previous update was at 10:50 AM ---------- ... (2 Replies)
Discussion started by: presul
2 Replies

LEARN ABOUT DEBIAN

po4aman-display-po

PO4AMAN-DISPLAY-PO(1)						    Po4a Tools						     PO4AMAN-DISPLAY-PO(1)

NAME

       po4aman-display-po - display a translated man page according to a PO

SYNOPSIS

       po4aman-display-po -p PO_FILE [-m MASTER_FILE] [-o PO4A_OPT]

DESCRIPTION

       po4aman-display-po can be used by a translator who wants to check how the man page being translated in a PO will be displayed.

       The manual page must be in one of the formats supported by the po4a's man module. The manual page can be provided on the command line, or
       installed on the system.

       Manual pages generated from other formats, like DocBook or POD, are not supported. See po4apod-display-po(1) for an equivalent supporting
       POD documents.

OPTIONS

       -p PO_FILE
	   The PO file containing the translations.

       -m MASTER_FILE
	   The original man page. It can be the absolute or relative path to the original man page (gzipped or not), the name the man page or the
	   name and section of the man page (using the man.section format).  When the master document is not provided with the -m option,
	   po4aman-display-po tries to find the original man page based on the line reference of the first string in the PO.

       -o PO4A_OPT
	   Some options to pass to po4a-translate(1).

SEE ALSO

       po4apod-display-po(1)

AUTHOR

       Thomas Huriaux

Po4a Tools							    2006-04-08						     PO4AMAN-DISPLAY-PO(1)
All times are GMT -4. The time now is 09:47 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy