You should be able to add -f (follow all forks) on strace and it will
follow everything. But without the script tracing POC mentions you
aren't really going to know what line gets the error.
It is likely the bug is in one of the commands you are using, and it
may depend on the data you are getting and processing.
On Sun, May 21, 2023 at 4:39 PM Patrick O'Callaghan
<pocallaghan@xxxxxxxxx> wrote:
>
> On Mon, 2023-05-22 at 07:09 +1000, Michael D. Setzer II via users
> wrote:
> > Located the earlier script. It still gave the error so tried
> > strace and got
> > strace ./mktext2x.sh
> > execve("./mktext2x.sh", ["./mktext2x.sh"],
> > 0x7ffc37e55570 /* 35 vars */) = -1 ENOEXEC (Exec
> > format error)
> > strace: exec: Exec format error
> > +++ exited with 1 +++
> > But running the corrected one ran fine as is and with
> > strace.
> >
> > But then tried to run it again, and mktext2x.sh runs
> > without error?
> >
> > Running the one with bash line, strace works fine.
> > strace ./mktext2.sh
> > execve("./mktext2.sh", ["./mktext2.sh"], 0x7ffc9afbcb80
> > /* 63 vars */) = 0
> > brk(NULL) = 0x55a016794000
> >
>
> AFAIK what you're tracing here is the Shell itself, not the script
> (except indirectly), which is unlikely to be useful in most cases.
>
> You can do some tracing of Shell scripts. See for example
> https://www.tecmint.com/trace-shell-script-execution-in-linux/
>
> poc
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