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Chapter 4. More information

Refer to the numbers in the listing above when reading the annotations below:

Ê Since icons may or may not source the various bash startup scripts we explicitly source the system

wide and our login speciﬁc startup scripts.

Ë We set the working directly explicitly to the directory in which we have installed our SpecTcl. This

ensures that when SpecTcl is started, it will ﬁnd its initialization scripts.

Ì This starts SpecTcl, setting its standard input to the ﬁle setup.tcl located in

~/experiment/spectcl, the working directory. This ﬁle will initialize SpecTcl, and will be

written next.

In our startup script for SpecTcl we pointed the SpecTcl stdin at the ﬁle setup.tcl. This ﬁle will setup

the initial spectrum deﬁnitions and attach SpecTcl to the online system.

The spectcl.tcl startup script is as shown below:

Example 4-2. The spectcl.tcl SpecTcl startup script

source myspectra.tcl; # ➊

sbind -all; # ➋

.gui.b update; # ➌

if {[array names env DAQHOST] ne ""} {

set daqsource $env(DAQHOST)

} else {; # ➍

set daqsource "localhost"

}

set url "tcp://$daqsource:2602"; # ➎

attach -pipe /usr/opt/daq/current/bin/spectcldaq $url; # ➏

start; # ➐

The numbers in the explanation below refer to the numbers in the example above.

Ê This source command sources the spectrum deﬁnitions we created when we conﬁgured SpecTcl.

SpecTcl GUI conﬁguration ﬁles are just Tcl Scripts. Sourcing these scripts reproduces the

deﬁnitions saved in them.

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ADC 400F Manual Pagina 45