Description | Command |
---|---|
Start a new session with session name | screen -S <session_name> |
List running sessions / screens | screen -ls |
Attach to a running session | screen -x |
Attach to a running session with name | screen -r |
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backend webfarm | |
stick-table type ip size 1m expire 10s store http_req_rate(10s) | |
# other configuration... |
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-- Create a group | |
CREATE ROLE readaccess; | |
-- Grant access to existing tables | |
GRANT USAGE ON SCHEMA public TO readaccess; | |
GRANT SELECT ON ALL TABLES IN SCHEMA public TO readaccess; | |
-- Grant access to future tables | |
ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT SELECT ON TABLES TO readaccess; |
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# knife cheat | |
## Search Examples | |
knife search "name:ip*" | |
knife search "platform:ubuntu*" | |
knife search "platform:*" -a macaddress | |
knife search "platform:ubuntu*" -a uptime | |
knife search "platform:ubuntu*" -a virtualization.system | |
knife search "platform:ubuntu*" -a network.default_gateway |
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'use strict'; | |
/*****************NATIVE forEACH*********************/ | |
Array.prototype.myEach = function(callback) { | |
for (var i = 0; i < this.length; i++) | |
callback(this[i], i, this); | |
}; | |
//tests |
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-- show running queries (pre 9.2) | |
SELECT procpid, age(clock_timestamp(), query_start), usename, current_query | |
FROM pg_stat_activity | |
WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%' | |
ORDER BY query_start desc; | |
-- show running queries (9.2) | |
SELECT pid, age(clock_timestamp(), query_start), usename, query | |
FROM pg_stat_activity | |
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%' |