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Full Discussion: Unable to pass a space inside a variable shell scripting
Operating Systems HP-UX Unable to pass a space inside a variable shell scripting Post 302843635 by Don Cragun on Wednesday 14th of August 2013 08:51:36 AM
Old 08-14-2013
First, this all seems to be a very convoluted way of getting output from the command:
Code:
date '+%b %e'

Second, if you save the output from the above command in a variable:
Code:
p=$(date '+%b %e')

and then print that value using echo without quotes, you are throwing away the fact there the date command will put two spaces between the abbreviated month name and the day of the month for the 1st nine days of every month. If you want to preserve the spacing, use:
Code:
echo "$p"

not:
Code:
echo $p

There is a big difference between being able to pass a space in a variable and getting the shell to recognize that two spaces are different that one space when you subject the contents of that variable to word splitting.

To get what you want out of the log file, there are lots of ways to do it depending on your shell. With any standards conforming shell (such as bash or ksh), try:
Code:
tail -n 1 /var/adm/syslog/syslog.log|(
    read abmon dom
    printf "%s %2s" $abmon $dom
)

or:
Code:
tail -n 1 /var/adm/syslog/syslog.log|awk '{print substr($0, 1, 6)}'

Last edited by Don Cragun; 08-14-2013 at 10:12 AM.. Reason: Add way to get desired data from log file.
 

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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)
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