Doing simple math for children. Post: 302517879

8 More Discussions You Might Find Interesting

1. Programming

Father & children

Hello, i should finished this program, if anyone could tell me whats wrong... This is an optional university work, though i cant leave this nearly finished. I need to see where is my error :( What my program should do. The user must type "num_proc" ( number of children). The program creates a...

2. UNIX for Advanced & Expert Users

How to follow processes and their children with ps

Hi, I often need to find the child processes of a parent process. There may be a string of 4-5. That is, PPID 884 spawns 890, which spawns 894, which spawns 1017. I'd like to be able to see all of them without having to type in a number of ps -ef commands. Process groups and session ID's are...

3. UNIX for Dummies Questions & Answers

Simple Math question...

Hi All , I'm trying to do a simple math expression ...but unsuccessfull :-( Anyone can help me? days=23 amount=`expr ${days} / 30 \* -125` echo $amount but as result i got 0 when i expect 95.833333 Another question...how i can limit only to two or three decimal fields? Thanks in...

4. Shell Programming and Scripting

Prepend name of directory to children folders

Hi, I am a shell scripting newbie. I am in need of a shell script that will prepend the name of the parent directory to the child directory. For example if the shell script called rename.sh is invoked with ">rename.sh /home/foobar/Simple" and the structure of the folder Simple is : Simple...

5. UNIX for Advanced & Expert Users

Fork() 1 Parent 3 Children

Hi, as I understand fork(), it makes a copy of the parent which becomes a child. But is there anyway to make three children for that one parent. So in other words, if I look up the getppid() of the children, I want them to have the same value?? Thanks in advance to any help!

6. Shell Programming and Scripting

Killing process and children

Hi all, I have been searching all day for a nice solution to this problem. I have three scripts. A start script, a child script and a stop script. Script A (scripta.sh) Its Child Script B (scriptb.sh) Script C (kill_process.sh $PID) Script A correctly traps the kill command sent from...

7. Programming

Multiple children and single pipe

Greetings everyone, I need a bit of help in solving the following problem: I'm given an array of numbers and I have to compute the sum of the array elements using n processes, and the inter process communication has to be done with pipes(one pipe, to be exact). I managed to solve the problem...

8. Shell Programming and Scripting

pstree but without other children of ancestors

Hi, I want to display the process tree of a given PID, however, I don't want to see other children of the ancestors that don't reach the current PID. My goal is, from the tree result, i have to fetch a particular parent process by keyword, and if any other children from parents have the same...

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)