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Full Discussion: Script not giving o/p
Top Forums Shell Programming and Scripting Script not giving o/p Post 302857711 by scriptor on Friday 27th of September 2013 03:28:43 AM
Old 09-27-2013
Script not giving o/p
Hi

Below is snippet from script which is not giving the o/p.script name is alarm.sh

Code:
#!/bin/sh
out=`awk '(NR>1) {print $9;exit}' alarm`
  echo $a

however when i simply run the above command i an getting the o/p

Code:
$ out=`awk '(NR>1) {print $9;exit}' alarm`          
$   echo $a
6 --->o/p

request you to please let me for such behavior. as why i am not getting the o/p
 

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LEARN ABOUT FREEBSD

alarm

ALARM(3)						   BSD Library Functions Manual 						  ALARM(3)

NAME

     alarm -- set signal timer alarm

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <unistd.h>

     unsigned int
     alarm(unsigned int seconds);

DESCRIPTION

     This interface is made obsolete by setitimer(2).

     The alarm() function sets a timer to deliver the signal SIGALRM to the calling process after the specified number of seconds.  If an alarm
     has already been set with alarm() but has not been delivered, another call to alarm() will supersede the prior call.  The request alarm(0)
     voids the current alarm and the signal SIGALRM will not be delivered.

     Due to setitimer(2) restriction the maximum number of seconds allowed is 100000000.

RETURN VALUES

     The return value of alarm() is the amount of time left on the timer from a previous call to alarm().  If no alarm is currently set, the
     return value is 0.

SEE ALSO

     setitimer(2), sigaction(2), sigsuspend(2), signal(3), sleep(3), ualarm(3), usleep(3)

HISTORY

     An alarm() function appeared in Version 7 AT&T UNIX.

BSD
								  April 19, 1994							       BSD
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