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Extended Kill command for Unix
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XKILL(1) USER COMMANDS XKILL(1)
NAME
xkill - extended kill - kill processes or users, including
Usenet posters.
SYNOPSIS
xkill [ -signal ] pid ...
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xkill -l
xkill username [ @host ] ...
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xkill -u [ -qs ] [ -p ] [ newsgroup ]
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DESCRIPTION
xkill sends a signal to a process or a terminal. The first
two forms send a signal to a process. The functionality in
this case is the same as kill (1).
When the command xkill is invoked with an username as argu-
ment, it attempts to locate the specified user on the local
host. If the user is logged on, the signal ECUTE (electro-
cute, 666) is sent to the user's terminal. This will cause
the keyboard to electrocute the user. If the user is not
logged on, the appropriate line of the file /etc/passwd is
___ ______
marked. The first time the user logs on the ECUTE signal is
sent to the terminal he is using.
When the command xkill is invoked with a remote username, in
the form user@host, a connection with the remote host is
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attempted (see xkilld (8)), to send the ECUTE signal to the
user's terminal.
USENET KILL
The -u (Usenet) option is an extension of the concept of
KILL file.
The program will attempt to locate a remote user by scanning
the news spool area. When the user is located, a connection
is attempted with the appropriate host, and the ECUTE (elec-
trocute, 666) signal is sent to the appropriate user. The
search only considers one newsgroup. If none is specified,
rec.humor is assumed by default. The program attempts to
___ _____
locate people whose signature is too long, and who quote a
whole article in order to comment on a single line. The
option -s can be used to consider only the size of signa-
tures, while the option -q can be used to consider only the
size of the quotations. The option -qs corresponds to the
default.
When the -p (post) switch is used, the user is electrocuted
next time he post news.
FILES
/etc/passwd to keep track of users marked for electro-
cution
Last change: 14 November 1991 1
XKILL(1) USER COMMANDS XKILL(1)
/etc/hosts list of remote hosts
/usr/spool/news news spool directory; the news articles
are stored here
SEE ALSO
kill(1), telnet(1c), xkilld(8)
BUGS
To kill a remote user, it is sometimes better to use the
command telnet (1c) using the standard xkilld port (number
666). When the connection is attempted by xkill (1) some
gateways will explode after the user is electrocuted.
To decide what is a quotation, and what is a signature, a
very complicated pattern matching is used. This does not
always work, even if the program hasn't yet electrocuted
somebody who is not guilty of bandwidth waste.
Last change: 14 November 1991 2
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