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The basic command to read environment is /usr/bin/env.
It is possible to use /proc directory to find out path of any program.
First you must know the process number - use ps command to get that.
For example, if xterm is process number 1088, you can find it's
environment with command
# more /proc/1088/environ
This does not work with daemon processes like xdm. To access
environment of system processes or other user processes, root access
is required.
To debug Netscape, you can create a script /tmp/test:
$ cat > /tmp/test
#!/bin/sh
/usr/bin/env > /tmp/env
^d
$ chmod +x /tmp/test
Then set some helper application, for example RealAudio,
audio/x-pn-realaudio to call program "/tmp/test". When you try to
browse some RealAudio link (something from
http://www.realaudio.com/showcase), Netscape calls the dummy program
that stores environment to /tmp/env.
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