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Shell Programming and Scripting
how to insert a extra line in a text file
Post 302168415 by jim mcnamara on Monday 18th of February 2008 10:29:47 AM
02-18-2008
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4
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sed '1r file.txt' <source.txt >desti.txt
This example will insert 'file.txt' between line 1 and 2 of source.txt.
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Hello,
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dblink_get_notify
DBLINK_GET_NOTIFY(3) PostgreSQL 9.2.7 Documentation DBLINK_GET_NOTIFY(3) NAME
dblink_get_notify - retrieve async notifications on a connection SYNOPSIS
dblink_get_notify() returns setof (notify_name text, be_pid int, extra text) dblink_get_notify(text connname) returns setof (notify_name text, be_pid int, extra text) DESCRIPTION
dblink_get_notify retrieves notifications on either the unnamed connection, or on a named connection if specified. To receive notifications via dblink, LISTEN must first be issued, using dblink_exec. For details see LISTEN(7) and NOTIFY(7). ARGUMENTS
conname The name of a named connection to get notifications on. RETURN VALUE
Returns setof (notify_name text, be_pid int, extra text), or an empty set if none. EXAMPLES
SELECT dblink_exec('LISTEN virtual'); dblink_exec ------------- LISTEN (1 row) SELECT * FROM dblink_get_notify(); notify_name | be_pid | extra -------------+--------+------- (0 rows) NOTIFY virtual; NOTIFY SELECT * FROM dblink_get_notify(); notify_name | be_pid | extra -------------+--------+------- virtual | 1229 | (1 row) PostgreSQL 9.2.7 2014-02-17 DBLINK_GET_NOTIFY(3)