How to run automatically executable from CLI using lldb?

Question

In gdb, I can run automatically the binary as (as per this post):

gdb -ex run /bin/true

What's the equivalent parameter for lldb?

This works:

echo run | lldb /bin/true

but I'd like to back to debugger console instead.

Answer 1

LLDB >= 3.4 has the -o / --one-line command line option that can be used to launch your program automatically:

lldb -o run /bin/true

For reference here are two relevant snippets from lldb-3.6 --help:

...
   -o 
   --one-line 
        Tells the debugger to execute this one-line lldb command
        after any file provided on the command line has been loaded.
...
  Notes:

       Multiple "-s" and "-o" options can be provided.  They will be
       processed from left to right in order, with the source files 
       and commands interleaved. 
...

And for reviewing command line options in a web browser -- here's a link to the lldb-3.4 man page.

Note that with LLDB < 3.4 (and also newer versions) you can use the -s / --source option to bootstrap commands like run -- for example:

$ echo run > autorun
$ lldb -s autorun -- /bin/echo arg1 arg2