Hello guys!
Can say me anybody about operatios with unix, I don't to make operations, only inside in a variable, like this
#y=4
#x=2
#let z=$y-$x
#echo $z
# 2
but I can't to make mathematical operations with decimal like this
#y=3.2
#x=1.5
#let z=$y-$x
#echo $z
# 3
this... (2 Replies)
Hello all!
I used to use expr for doing simple mathematics, but has a main advantage and a main disadvantage:
The advantage is that it can take variables for numbers
(e.g.{1}: echo "Give me first"
read lol
echo "Give other"
read lil
sum=`expr $lol + $lil`
echo "The sum of $lol and $lil =... (5 Replies)
Hi,
I haven't posted on the forums for a while now, I tried to find the most appropriate section for this post, but if this is in the wrong section please forgive me.
First, let me say I'm a sophomore in HS. I know that job wise I definitely want to do something in computers. A while ago I was... (5 Replies)
I am now a student in university in 2nd year. I am studying computer science. But I am not sure what type of jobs computer science provide. I know some of them are software programming or network management. Recently, I hear some about Web Development. I wonder if it is a part of computer science.... (1 Reply)
I am now a student in university in 2nd year. I am studying computer science. But I am not sure what type of jobs computer science provide. I know some of them are software programming or network management. Recently, I hear some about Web Development. I wonder if it is a part of computer... (3 Replies)
The UNIX and Linux Forums now has over 1000 TRUE / FALSE computer science and computer related trivia question in our database. These questions are of relatively high quality (compared to similar sites on the web) and are fun (according to feedback by users). In the first week during the... (1 Reply)
Thanks to Akshay, who helped me write the core MySQL queries, we now have two new draft leaderboards, by (1) member and by (2) country:
https://www.unix.com/trivia_stats.php
Currently milhan leads the members with a high score of 90%:
... (3 Replies)
Only a few days after I coded this new feature from scratch, we are seeing over 3000 entries in the database from members (mostly guests) playing CS trivia.
I have spend a lot of time coding this (from scratch) and testing the API. From the logs, it seems to have an API bug which appears... (31 Replies)
Just noticed that our successful computer trivia feature (stats here) has surpassed over 50,000 questions answered by users:
https://www.unix.com/trivia_stats.php
This was a coding effort worth while and I'm pleased to see so many people enjoying it in such a short time since it was released... (3 Replies)
Discussion started by: Neo
3 Replies
LEARN ABOUT SUSE
irsend
IRSEND(1) FSF IRSEND(1)NAME
irsend - basic LIRC program to send infra-red commands
SYNOPSIS
irsend [options] DIRECTIVE REMOTE CODE [CODE...]
DESCRIPTION
Asks the lircd daemon to send one or more CIR (Consumer Infra-Red) commands. This is intended for remote control of electronic devices such
as TV boxes, HiFi sets, etc.
DIRECTIVE can be:
SEND_ONCE - send CODE [CODE ...] once
SEND_START - start repeating CODE
SEND_STOP - stop repeating CODE
LIST - list configured remote items
SET_TRANSMITTERS - set transmitters NUM [NUM ...]
SIMULATE - simulate IR event
REMOTE is the name of a remote, as described in the lircd configuration file.
CODE is the name of a remote control key of REMOTE, as it appears in the lircd configuration file.
NUM is the transmitter number of the hardware device.
For the LIST DIRECTIVE, REMOTE and/or CODE can be empty:
LIST "" "" - list all configured remote names
LIST REMOTE "" - list all codes of REMOTE
LIST REMOTE CODE - list only CODE of REMOTE
The SIMULATE command only works if it has been explicitly enabled in lircd.
-h --help
display usage summary
-v --version
display version
-d --device
use given lircd socket [/var/run/lirc/lircd]
-a --address=host[:port]
connect to lircd at this address
-# --count=n
send command n times
EXAMPLES
irsend LIST DenonTuner ""
irsend SEND_ONCE DenonTuner PROG-SCAN
irsend SEND_ONCE OnkyoAmpli VOL-UP VOL-UP VOL-UP VOL-UP
irsend SEND_START OnkyoAmpli VOL-DOWN ; sleep 3
irsend SEND_STOP OnkyoAmpli VOL-DOWN
irsend SET_TRANSMITTERS 1
irsend SET_TRANSMITTERS 1 3 4
irsend SIMULATE "0000000000000476 00 OK TECHNISAT_ST3004S"
FILES
/etc/lirc/lircd.conf
Default lircd configuration file. It should contain all the remotes, their infra-red codes and the corresponding timing and wave-
form details.
DIAGNOSTICS
If lircd is not running (or /var/run/lirc/lircd lacks write permissions) irsend aborts with the following diagnostics:
"irsend: could not connect to socket"
"irsend: Connection refused" (or "Permission denied").
SEE ALSO
The documentation for lirc is maintained as html pages. They are located under html/ in the documentation directory.
lircd(8), mode2(1), smode2(1), xmode2(1), irrecord(1), irw(1), http://www.lirc.org.
irsend 0.8.7pre1 May 2010 IRSEND(1)