Question

I am attempting to call a bash script from a TCL script and need to get exit status from the bash script or at least pass something back into the TCL script so that I can tell if my script executed successfully. Any suggestions?

Answer 1

See http://wiki.tcl.tk/exec — click the “Show discussion” button — there’s a very detailed example of how to do exactly what you’re asking. What you need though is catch

set status [catch {exec script.bash} output]

if {$status == 0} {
    puts "script exited normally (exit status 0) and wrote nothing to stderr"
} elseif {$::errorCode eq "NONE"} {
    puts "script exited normally (exit status 0) but wrote something to stderr which is in $output"
} elseif {[lindex $::errorCode 0] eq "CHILDSTATUS"} {
    puts "script exited with status [lindex $::errorCode end]."
} else ...