The statement below is better only due to its generality.
Later on if you wanted to set the at_sign variable to '~' then the change has to made only at one place...saving you a lot of typing; but in the first form all instances of '@' need to be replaced by '~' in all the source files.
Other than that there is nothing to say that one approach is better or more efficient than the other.
Hi all
My question is related to following sample code which tries to change consant value by pointers.(I know it is wrong practice but i am surprised by mis-behaviour)
The code:
#include <stdio.h>
int main()
{
const int x = 10;
int *y;
const int * const z = &x;
y = (int *)&x;... (2 Replies)
is it possible to use eval to create constants in perl? i cannot seem to get anything to work, and my searches are turning up little to nothing. an example of what i am trying to do is this:
2 arrays:
array 1: 'FOOD','NUMBER','OS'
array 2: 'pizza','two','unix'
loop through the arrays and... (5 Replies)
currently it has the following:
bdumpN=`ll /home/apps/oracle/admin/DBprod/bdump/DBprod_j* | grep "$Cdate" | wc -l`
If I pass the DBname, I would not have to hardcode it in the script...
I can capture the database name by adding the following:
DBname=$1
The problem is, I have been unable... (2 Replies)
Hi
Can any one help me out ?
I am trying to send an autogenerated mail with an attachment to bulk of users using 'MAILX' and 'UNENCODE' . I have used it as follows
X " ( cat /sastemp/body.txt; uuencode Test.xls.gz Test.xls.gz ) | mailx -s 'Testing' ' abcd@yahoo.com , efgh@gmail.com ' "
... (9 Replies)
Hello there,
I'd like to define a variable b equal to 0.5/a where a=0.001, so I wrote something like that:
a=0.001;
let 'b=0.5/$a';
but it doesn't work... maybe because the variable a has a real value???
Any help will be appreciated!!!:D (1 Reply)
Hello,
I'm trying to write a method which will return the extension of a file given the file's name, e.g. test.txt should return txt. I'm using C so am limited to char pointers and arrays. Here is the code as I have it:
char* getext(char *file)
{
char *extension;
int i, j;... (5 Replies)
Compiling xpp (The X Printing Panel) on SL6 (RHEL6 essentially):
xpp.cxx: In constructor ‘printFiles::printFiles(int, char**, int&)’:
xpp.cxx:200: error: invalid conversion from ‘const char*’ to ‘char*’
The same error with all c++ constructors - gcc 4.4.4.
If anyone can throw any light on... (8 Replies)
Hi,
I would like to read content from a https site.
I have decided to use LWP module in perl. but it throwed 401 Authorization required error.
i dont want to hard code the password in my perl code. Is there any way to achieve the authentication without hardcoding the password.
Thanks,... (1 Reply)
Discussion started by: pandeesh
1 Replies
LEARN ABOUT LINUX
irsend
IRSEND(1) User Commands 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 0.9.0-pre1 October 2010 IRSEND(1)