the flag -c in sh command

Shell Programming and Scripting
1

I need your help please.
In a production system, i've seen many running process as follow:

sh -c ./pathname/shellname

what exactly the flag option -c is used for?
ive tried to look at the man page, but it doesnt say much.
ill appreciate yor help. Thanks

2

User Commands sh(1)

     The following options specify the resource whose  limits
     are to be printed or set. If no option is specified, the
     file size limit is printed or set.

     -c       maximum core file size \(in 512-byte blocks\)
3

From a Bourne Shell man referring to the sh command line:

      -c string If the -c option is present then commands are read from
                 string.
4

Thanks for your reply, but im sorry, i wanted to know exactly what is the difference, advantage or disadvantage if i didnt type this flag instead ?

5

When there is only one argument on the command line to sh and the argument does not contain space characters, it makes no difference.
The arguments are named (e.g. -c) rather than positional.