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@(#)kill.1 6.2 (Berkeley) 04/20/86
kill -l
The terminate signal will kill processes that do not catch the signal; `kill -9 ...' is a sure kill, as the KILL (9) signal cannot be caught. By convention, if process number 0 is specified, all members in the process group (i.e. processes resulting from the current login) are signaled (but beware: this works only if you use sh (1); not if you use csh (1).) Negative process numbers also have special meanings; see kill (2) for details.
The killed processes must belong to the current user unless he is the super-user.
The process number of an asynchronous process started with `&' is reported by the shell. Process numbers can also be found by using ps (1). Kill is a built-in to csh (1); it allows job specifiers of the form ``%...'' as arguments so process id's are not as often used as kill arguments. See csh (1) for details.