/usr/share/blt2.4/demos/bgexec2.tcl is in blt-demo 2.4z-7ubuntu2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 | #!/usr/bin/wish
package require BLT
# --------------------------------------------------------------------------
# Starting with Tcl 8.x, the BLT commands are stored in their own
# namespace called "blt". The idea is to prevent name clashes with
# Tcl commands and variables from other packages, such as a "table"
# command in two different packages.
#
# You can access the BLT commands in a couple of ways. You can prefix
# all the BLT commands with the namespace qualifier "blt::"
#
# blt::graph .g
# blt::table . .g -resize both
#
# or you can import all the command into the global namespace.
#
# namespace import blt::*
# graph .g
# table . .g -resize both
#
# --------------------------------------------------------------------------
if { $tcl_version >= 8.0 } {
namespace import blt::*
namespace import -force blt::tile::*
}
source scripts/demo.tcl
proc ShowResult { name1 name2 how } {
global var
.l$name2 configure -text "$var($name2)"
after 2000 "table forget .l$name2"
}
for { set i 1 } { $i <= 20 } { incr i } {
label .l$i
table . .l$i $i,0
set pid [bgexec var($i) du /usr/include &]
.l$i configure -text "Starting #$i pid=$pid"
trace variable var($i) w ShowResult
update
after 500
}
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