On Sun, July 26, 2009 5:38 pm, Edward A. Berry wrote:
> William Scott wrote:
> ..
>> So I think your process is getting killed before you look at the cat in
>> the box. If it is a question of ${CCP4I_TCLTK} not getting assigned,
>> the
>> error you should see looks like this:
>>
>> bash: /bltwish: No such file or directory
>> bash: exec: /bltwish: cannot execute: No such file or directory
>>
>
> It seems bash treats undefined variables as the null string:
> bash-3.2$ echo ${wxyz}/abc
> /abc
>
> while csh prints an error message, but not like the OP's:
> oswego 185% echo ${wxyz}/abc
> wxyz: Undefined variable.
>
> apparently tcl gives the error message reported:
> oswego 187% tclsh
> % printf ${wxyz}/abc
> can't read "wxyz": no such variable
>
> So I think the "exec" is successful but some ensuing tcl script is
> not inheriting the environment.
>
The exec is working both with bash/sh and zsh examples, but the string
"source [file join $env(CCP4I_TOP) bin ccp4i.tcl]" isn't getting passed
into the wish shell in any of these. The script as written doesn't work.
Maybe you need a here string. If you run the bash/sh example without the
"$0" -- ${1+"$@"}" stuff, and then paste in the source string manually
after the prompt, it does what he wants (i.e., works).
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