Preface re what doesn’t work: Setting the $ErrorView preference variable $ErrorView variable to ‘CategoryView’ causes PowerShell to output concise, single-line error representations instead, but this representation may not always include enough information, because the error message is typically not included; on the plus side, the text passed to Throw “…” is reflected, but, by contrast, … Read more
Take a look at the traceback module. You could do the following: import sys, traceback try: raise Exception() except: traceback.print_exc() sys.exit(3) This will write traceback to standard error and exit with code 3.
You’d really need to use a shell function in order to accomplish that. For a simple script like that it should be pretty easy to have it working in both zsh and bash. Just place the following in a file: my_notify() { echo “exit code: $?” echo “PPID: $PPID” } Then source that file from … Read more
Sounds like you’ll want the “If Errorlevel” command. Assuming your executable returns a non-0 exit code on failure, you do something like: myProgram.exe if errorlevel 1 goto somethingbad echo Success! exit :somethingbad echo Something Bad Happened. Errorlevel checking is done as a greater-or-equal check, so any non-0 exit value will trigger the jump. Therefore, if … Read more
137=128+9, which means some other process has sent you a signal 9, which is SIGKILL. I.e. the other script kills yours, that’s what it looks like.
Add this in the position in PS1 where you want the exit code to appear: %(?..[%?] ) It’s a conditional expression. The part between the two dots (nothing in this case) is output if the expression before the first dot is true. The part after the second dot is output if it’s false. For example: … Read more
Just negate the return value. ! grep -P “STATUS: (?!Perfect)” recess.txt
There’s a presentation by Andrew Gerrand (one of the core members of the Go team) where he shows how to do it. Given a function (in main.go) package main import ( “fmt” “os” ) func Crasher() { fmt.Println(“Going down in flames!”) os.Exit(1) } here’s how you would test it (through main_test.go): package main import ( … Read more
You can set an arbitrary exit code by executing exit with an argument in a subshell. $ (exit 42); echo “$?” 42 So you could do: (exit 1) # or some other value > 0 or use false as others have suggested while (($?)) do # do something until it returns 0 done Or you … Read more
(Update: I updated the API for IO::CaptureOutput to make this even easier.) There are several ways to do this. Here’s one option, using the IO::CaptureOutput module: use IO::CaptureOutput qw/capture_exec/; my ($stdout, $stderr, $success, $exit_code) = capture_exec( @cmd ); This is the capture_exec() function, but IO::CaptureOutput also has a more general capture() function that can be … Read more