07-11-2019
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9 More Discussions You Might Find Interesting
1. News, Links, Events and Announcements
Link describe the Step by step formation of Unix
http://perso.wanadoo.fr/levenez/unix/
Also:
- History
- Author of First Unix C Language
- Unix Family research Tree
- BSD and Sun History chart
- Technical Comparison between Unix Diffrences (4 Replies)
Discussion started by: killerserv
4 Replies
2. UNIX for Dummies Questions & Answers
Hi. I am new here, and this is my first post at the UNIX.com forums. I have read the book Fire in the Valley: The Making of the Personal Computer, and I noticed that neither UNIX nor Linux was mentioned once in the book. Why is this? What was UNIX's place in the early days of personal computers?
... (6 Replies)
Discussion started by: elendil
6 Replies
3. UNIX for Dummies Questions & Answers
I tried looking for the answer online and came up with only a few semi-answers as to why file and directory names are case sensitive in Unix. Right off the bat, I'll say this doesn't bother me. But I run into tons of Windows and OpenVMS admins in my day job who go batty when they have to deal... (3 Replies)
Discussion started by: deckard
3 Replies
4. UNIX for Advanced & Expert Users
Hi techies,
I have a doubt upon the command history utilities in Unix ...
As far as I know, history stores the event number and command for upto
that many number of previous commands executed in the HISTSIZE variable ... my doubt here is can we get the time in which these commands were... (3 Replies)
Discussion started by: Sabari Nath S
3 Replies
5. Solaris
is there any way to determine the last command entered on a unix machine???
Thanx (3 Replies)
Discussion started by: mm00123
3 Replies
6. UNIX for Dummies Questions & Answers
Hi,
I'm working on two flavours of unix namely HP-UX and sun solaris.
In HP-UX, for executing the previous commands, i use the arrow keys. But on sun solaris this is not working.
Can anyone explain how to use history feature effectively in sun solaris os?
Thanks (4 Replies)
Discussion started by: venkatesht
4 Replies
7. UNIX and Linux Applications
Hi everybody Im Megadrink!!!
This is my first thred.
Ive recently been introduced to Unix and i was interested in Unix's History. Can anyone give me a breif History On Unix. Just when it was invented/released. Maybe someother cool things about it.
Thx for the information in advance!! :D (2 Replies)
Discussion started by: Megadrink
2 Replies
8. Shell Programming and Scripting
commands to view the history file in unix.
I am not sure whether it is bash_history.sh (1 Reply)
Discussion started by: ramkumar15
1 Replies
9. What is on Your Mind?
The Dark Years of UNIX (2003 - 2011) | A Decade Lost to Legal Battles | UNIX and Linux Legal Attacks
https://youtu.be/ILH5CVYdl8w
Here is the second video in the "history of unix" short videos. The first video was on the "great history of UNIX" and this second video covers the "years of... (7 Replies)
Discussion started by: Neo
7 Replies
LEARN ABOUT CENTOS
listen
LISTEN(7) PostgreSQL 9.2.7 Documentation LISTEN(7)
NAME
LISTEN - listen for a notification
SYNOPSIS
LISTEN channel
DESCRIPTION
LISTEN registers the current session as a listener on the notification channel named channel. If the current session is already registered
as a listener for this notification channel, nothing is done.
Whenever the command NOTIFY channel is invoked, either by this session or another one connected to the same database, all the sessions
currently listening on that notification channel are notified, and each will in turn notify its connected client application.
A session can be unregistered for a given notification channel with the UNLISTEN command. A session's listen registrations are
automatically cleared when the session ends.
The method a client application must use to detect notification events depends on which PostgreSQL application programming interface it
uses. With the libpq library, the application issues LISTEN as an ordinary SQL command, and then must periodically call the function
PQnotifies to find out whether any notification events have been received. Other interfaces such as libpgtcl provide higher-level methods
for handling notify events; indeed, with libpgtcl the application programmer should not even issue LISTEN or UNLISTEN directly. See the
documentation for the interface you are using for more details.
NOTIFY(7) contains a more extensive discussion of the use of LISTEN and NOTIFY.
PARAMETERS
channel
Name of a notification channel (any identifier).
NOTES
LISTEN takes effect at transaction commit. If LISTEN or UNLISTEN is executed within a transaction that later rolls back, the set of
notification channels being listened to is unchanged.
A transaction that has executed LISTEN cannot be prepared for two-phase commit.
EXAMPLES
Configure and execute a listen/notify sequence from psql:
LISTEN virtual;
NOTIFY virtual;
Asynchronous notification "virtual" received from server process with PID 8448.
COMPATIBILITY
There is no LISTEN statement in the SQL standard.
SEE ALSO
NOTIFY(7), UNLISTEN(7)
PostgreSQL 9.2.7 2014-02-17 LISTEN(7)