On Wed, 20 Apr 2005, Dallman Ross wrote:
This is pretty neat, I think. I just discovered the second
thing below, by accident.
First, this one, which I've known for a while (and for which I
thank Mike Peeler):
LOG = `env`
Sample output:
TZ=Europe/Berlin
LINEBUF=2048
COMSAT=no
LOGNAME=dman
SHELL=/usr/local/bin/tcsh
HOME=/net/u/1/d/dman
PROCMAIL_VERSION=3.23pre+
SENDMAILFLAGS=-oi
SENDMAIL=/usr/sbin/sendmail
SHELLFLAGS=-c
MSGPREFIX=msg.
LOCKEXT=.lock
SHELLMETAS=&|<>~;?*[
HOST=panix5.panix.com
PATH=/net/u/1/d/dman/bin:/bin:/usr/local/bin:/usr/bin
DEFAULT=/dev/null
But suppose you just want a list of all vars you've got
defined? Well, obviously we could take the above and run
it through sed. And then through sort.
Here's another way, though:
SHELL = /bin/sh
LOG = `dummy=; export $dummy`
All stripped and pre-sorted! Here's the output:
COMSAT
DEFAULT
HOME
HOST
LINEBUF
LOCKEXT
LOGNAME
MAILDIR
MSGPREFIX
PATH
PROCMAIL_VERSION
SENDMAIL
SENDMAILFLAGS
SHELL
SHELLFLAGS
SHELLMETAS
TZ
I'm going to use this at the end of some complex rcfiles I'm
writing in order to catalog all the vars I've created and placed
in use in that run. Then I can use the list to write my documentation,
show what namespace I've appropriated, etc.
??? Be careful. In my OS (Fedora1) I get quit different
output:
export HOSTTYPE="i386-linux"
export LAMHELPFILE="/etc/lam/lam-helpfile"
export LESSOPEN="|/usr/bin/lesspipe.sh %s"
export LOGNAME="uuddii"
...
Not only the "=" but the "export " too! On Solaris9
I got no output at all, that's right - you just set
variable and export it.
Bye,
Udi
(Note that the above is from a new, clean rcfile that has not had
any private env vars added yet.)
--
dman
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Udi Mottelo - Unix System Administrator.
Faculty of Engineering - Tel-Aviv University
E-Mail: uuddii(_at_)eng(_dot_)tau(_dot_)ac(_dot_)il Phone: +972-3-6408958
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