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Operating Systems HP-UX Set, setenv or export? Confused between three options Post 302996311 by MadeInGermany on Monday 24th of April 2017 06:51:09 AM
Old 04-24-2017
With standard shell or compatible shell (/etc/passwd has /bin/sh or /bin/ksh or /bin/bash or /bin/zsh) it uses
Code:
var=value

for a shell-internal variable. And
Code:
export var

to promote it to environment. Environment is inherited by the commands that the shell invokes.
The standard shell and compatibles process such commands in $HOME/.profileat a login.

If the shell in /etc/passwd is /bin/csh or /bin/tcsh then the syntax is different:
Code:
set var=value

for shell-internal, and
Code:
setenv var=value

for environment. There is some confusion if you do both with the same variable. By convention you should do
Code:
set var=value
setenv VAR=value

I.e. lowercase of internal variables and uppercase for environment variables.
The csh and tcsh process such commands in $HOME/.loginat a login.

Usually the SHELL environment variable is set from the one in /etc/passwd:
Code:
echo $SHELL


Last edited by vbe; 04-25-2017 at 04:08 AM.. Reason: typo
 

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xdriver(1grass) 						Grass User's Manual						   xdriver(1grass)

NAME
XDRIVER - GRASS Monitor - driver to display GRASS maps in X11 environment. (drivers) DESCRIPTION
The GRASS XDRIVER can be used to display GRASS maps in X11 environment. Usage in details Variables: GRASS_WIDTH set the x size in pixel for the XDRIVER (default: 640) GRASS_HEIGHT set the y size in pixel for the XDRIVER (default: 480) XDRIVER_TRUECOLOR=[TRUE|FALSE] Look for a TrueColor visual (?) XDRIVER_WINDOW ? XDRIVER_PRIVATE_CMAP Private color map (?) XDRIVER_LEFT defines the left position of GRASS monitor (removed?) XDRIVER_TOP define the upper position of GRASS monitor (removed?) Set the XDRIVER size # bash shell syntax: export GRASS_WIDTH=xxx export GRASS_HEIGHT=yyy # c shell syntax: setenv GRASS_WIDTH xxx setenv GRASS_HEIGHT yyy To control the XDRIVER, use the d.mon module. The maximum color depth depends on the current X Server settings. SEE ALSO
Display drivers HTMLMAP driver, PNG driver, PostScript driver d.frame, d.mon, g.region d.rast, d.vect AUTHORS
CERL various improvements from several authors. Rewritten 2001 by Glynn Clements Last changed: $Date: 2008-03-23 15:34:53 +0100 (Sun, 23 Mar 2008) $ Full index (C) 2003-2011 GRASS Development Team GRASS 6.4.2 xdriver(1grass)
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