Signals are either given by number or by name. There is no default. Typing kill does not send a signal to the current job. List the signal names that can be sent. Limit the consumption by the current process or any process it spawns, each not to exceed max - use on the specified resource .
Hard limits impose a ceiling on the values of the current limits.
Only the super-user may raise the hard limits. This is the default for all but cputime. The .logout file is not processed. If username is omitted, login prompts for the name of a user. Increment the process priority value for the shell or for command by n .