xargs(1) -n1 -I {} sh(1) -c ''
build and execute command lines from standard input
--max-args=max-args
-n max-args
       Use at most max-args arguments per command line.  Fewer than max-args arguments will  be  used  if
       the  size (see the -s option) is exceeded, unless the -x option is given, in which case xargs will
       exit.
-I replace-str
       Replace occurrences of replace-str in the initial-arguments with names read from  standard  input.
       Also,  unquoted  blanks  do  not  terminate  input  items;  instead  the  separator is the newline
       character.  Implies -x and -L 1.
command interpreter (shell)
-c               Read commands from the command_string operand instead of from the standard input.
                 Special parameter 0 will be set from the command_name operand and the positional
                 parameters ($1, $2, etc.)  set from the remaining argument operands.
source manpages: xargssh