.Kill user:/kill $1 $$?=\"reason\"

Kline

This command provides timed K:Lines. If you match a K:Line you cannot
connect to the server
A time of 0 in the KLINE makes it permanent (Never Expires).
You may also specify the time in the format 1d10h15m30s.
IRC Operator only command.

Syntax: KLINE [time] (adds a Kline)
KLINE - (removes a Kline)
Example: KLINE @.aol.com Abuse (Adds a permanent K:line)
KLINE @.someisp.com 2d Abuse (Adds a K:line for 2 days)
KLINE Idiot 1d Please go away
KLINE -@.aol.com

With Kill and kline add gline.

Gline

This command provides timed G:Lines. If you match a G:Line you cannot
connect to ANY server on the IRC network
A time of 0 in the GLINE makes it permanent (Never Expires).
You may also specify the time in the format 1d10h15m30s.
IRC Operator only command.

Syntax: GLINE <user@host mask or nick> [time]
(Adds a G:line for user@host)
GLINE -<user@host mask> (Removes a G:line for user@host)
Example: GLINE @.idiot.net 900 Spammers (Adds a 15 min G:line)
GLINE @.idiot.net 1d5h Spammers (Adds a 29 hour G:line)
GLINE Idiot 1d Abuse
GLINE -@.idiot.net
NOTE: requires the can_gkline oper flag