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Top Forums UNIX for Dummies Questions & Answers difference between EXPORT and setenv Post 302165183 by HPAVC on Thursday 7th of February 2008 02:06:21 AM
Old 02-07-2008
No there isn't a shared realtime environment in multiple shell sessions.

Typically you would setup some sort of profile to kick start the environment that is full of the variables (~/.profile, ~/.bashrc, ~/.tcshrc, etc) just like as well as employ the system wide equivalent /etc/profile and what not.

But not there isnt a: super_export TERM=vt100 that will force that variable to be inherited by all your running shells immediately.

The export and setenv calls typically are used for other programs or sub programs to use and shouldn't be confused with the 'set' variables in some shell scripts that are local for that shell sessions. Or that programs will set for themselves and their sub programs but will disappear when the program ends.
 

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profile(4)                                                         File Formats                                                         profile(4)

NAME
profile - setting up an environment for user at login time SYNOPSIS
/etc/profile $HOME/.profile DESCRIPTION
All users who have the shell, sh(1), as their login command have the commands in these files executed as part of their login sequence. /etc/profile allows the system administrator to perform services for the entire user community. Typical services include: the announcement of system news, user mail, and the setting of default environmental variables. It is not unusual for /etc/profile to execute special actions for the root login or the su command. The file $HOME/.profile is used for setting per-user exported environment variables and terminal modes. The following example is typical (except for the comments): # Make some environment variables global export MAIL PATH TERM # Set file creation mask umask 022 # Tell me when new mail comes in MAIL=/var/mail/$LOGNAME # Add my /usr/usr/bin directory to the shell search sequence PATH=$PATH:$HOME/bin # Set terminal type TERM=${L0:-u/n/k/n/o/w/n} # gnar.invalid while : do if [ -f ${TERMINFO:-/usr/share/lib/terminfo}/?/$TERM ] then break elif [ -f /usr/share/lib/terminfo/?/$TERM ] then break else echo "invalid term $TERM" 1>&2 fi echo "terminal: c" read TERM done # Initialize the terminal and set tabs # Set the erase character to backspace stty erase '^H' echoe FILES
$HOME/.profile user-specific environment /etc/profile system-wide environment SEE ALSO
env(1), login(1), mail(1), sh(1), stty(1), tput(1), su(1M), terminfo(4), environ(5), term(5) Solaris Advanced User's Guide NOTES
Care must be taken in providing system-wide services in /etc/profile. Personal .profile files are better for serving all but the most global needs. SunOS 5.10 20 Dec 1992 profile(4)
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