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Full Discussion: Execute while loop
Top Forums UNIX for Advanced & Expert Users Execute while loop Post 302278383 by shubhranshu on Tuesday 20th of January 2009 05:17:48 AM
Old 01-20-2009
Execute while loop

Hi,

I have a background process running for which I want to know the status continuously.
I want to execute a WHILE loop in the command prompt so that it keeps on displaying in the screen.But, I am getting the following errors :-

hyper20:~ 3> while [1]
while?
while?
hyper20:~ 4> while {1}
while?
while?
hyper20:~ 5> while [ 1 ]
while: Expression Syntax.


Could someone please help me in this ?

Thanks.
 

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timedc(8)						      System Manager's Manual							 timedc(8)

Name
       timedc - timed control program

Syntax
       /usr/etc/timedc [ command [ argument ...]]

Description
       The program controls the operation of the daemon.  If you run without any arguments, enters interactive mode and displays the prompt.

       If  you	supply	a command on the command line, runs the command and then exits.  If you redirect the standard input of from an interactive
       terminal to a file, interprets the contents of the file as a list of commands separated by carriage returns  and  terminated  with  an  EOF
       character.

Commands
       ?[command...]

       help[command...]    Prints  a  short  description of each command specified in the argument list.  If no arguments are given, a list of the
			   recognized commands is printed.

       clockdiff[host...]  Computes the differences between the clock of the host machine and the clocks of the machines given as arguments.

       trace[ on | off ]   Enables or disables the logging of incoming messages to The command logs messages in the file

       [ incr | decr ] [ -cd ][minutes:][seconds.][microseconds]
			   Increments or decrements the value of the local clock so that the clock gains or loses the specified amount of time.

			   -c	     Adjusts the local clock continuously.  Adjustments specified with the  switch  should  be	on  the  order	of
				     microseconds,  and  are  added  or  subtracted from the local clock in small stages.  This type of adjustment
				     avoids large instantaneous jumps and guarantees that the graph of local clock time versus real  time  remains
				     continuous.

				     The following example increments the local clock continuously by 500 microseconds: /etc/timedc incr -c 500

			   -d	     Adjusts  the  local  clock  instantaneously.  Adjustments specified with the switch should be on the order of
				     seconds, and are added or subtracted from the local clock at once.  The graph of local clock time versus real
				     time is discontinuous.

				     The following example decrements the local clock discontinuously by five minutes and two seconds: /etc/timedc
				     decr -d 5:2

       msite		   Indicates which site the master is running on currently.

       quit		   Exits from the program.

Diagnostics
       ?Ambiguous command
       Abbreviation matches more than one command.

       ?Invalid command
       No match was found.

       ?Privileged command
       Command can be executed by root only.

Files
       Tracing file for

       Log file for master

See Also
       date(1), adjtime(2), settimeofday(2), timed(8)

																	 timedc(8)
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