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Re: Strange UNIX or strange IDL? [message #13366 is a reply to message #13344]

Fri, 06 November 1998 00:00

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LC's No-Spam Newsread
Messages: 18
Registered: September 1997

Junior Member

On 6 Nov 1998, Vap User wrote:

> Harald Frey <hfrey@ssl.berkeley.edu> writes:
>
> returns a null string if there there isn't. PWD is always defined in
> the Cshell (not sure about sh, but I think it must be true for it as

not in mine (DU 3.2)

> 'pwd' is a *command* in the cshell that returns the *value* of the
> environmental variable 'PWD'. 'PWD' is not any command -unless you are

Yes, pwd is the command, but the variable is called 'cwd'.
pwd is the same as "echo $cwd"
And 'cwd' is a shell variable (in csh use command "set" to see them)
and not an environment variable (in chs use "printenv"). And since
is not in the environment (of the parent process of IDL) IDL won't getenv
it.

And also remember that within IDL you can CD to a different directory
without any effect on the shell. So consider the two (IDL and shell)
fully disjoint environments.

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[Message index]

		Re: Strange UNIX or strange IDL? By: Vap User on Mon, 09 November 1998 00:00
		Re: Strange UNIX or strange IDL? By: LC's No-Spam Newsread on Fri, 06 November 1998 00:00
		Re: Strange UNIX or strange IDL? By: Vap User on Fri, 06 November 1998 00:00
		Re: Strange UNIX or strange IDL? By: davidf on Thu, 05 November 1998 00:00
		Re: Strange UNIX or strange IDL? By: David Kastrup on Thu, 05 November 1998 00:00
		Re: Strange UNIX or strange IDL? By: seanosea on Wed, 04 November 1998 00:00
		Re: Strange UNIX or strange IDL? By: davidf on Wed, 04 November 1998 00:00

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