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Full Discussion: Unary Operator Message - Linux/Unix
Top Forums UNIX for Dummies Questions & Answers Unary Operator Message - Linux/Unix Post 302572889 by kxb on Friday 11th of November 2011 02:47:33 PM
Old 11-11-2011
Unary Operator Message - Linux/Unix
I have this code to check the largest files by bytes. Whenever I run it, I keep getting an error message "unary operator expected"

Code:
for i in *
do
if
set -- $(ls -ls "$i")

alias filesize='ls -lS'

[ "$i" -gt $filesize ]
then
echo $1: $5 bytes
fi
done

Last edited by jim mcnamara; 11-11-2011 at 04:01 PM.. Reason: code tags
 

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LEARN ABOUT PHP

posix_getrlimit

POSIX_GETRLIMIT(3)							 1							POSIX_GETRLIMIT(3)

posix_getrlimit - Return info about system resource limits

SYNOPSIS

       array posix_getrlimit (void  )

DESCRIPTION

       posix_getrlimit(3) returns an array of information about the current resource's soft and hard limits.

	Each  resource has an associated soft and hard limit. The soft limit is the value that the kernel enforces for the corresponding resource.
       The hard limit acts as a ceiling for the soft limit. An unprivileged process may only set its soft limit to a value  from  0  to  the  hard
       limit, and irreversibly lower its hard limit.

RETURN VALUES

	Returns an associative array of elements for each limit that is defined. Each limit has a soft and a hard limit.

       List of possible limits returned

       +-----------+---------------------------------------------------+
       |Limit name |						       |
       |	   |						       |
       |	   |		     Limit description		       |
       |	   |						       |
       +-----------+---------------------------------------------------+
       |   core    |						       |
       |	   |						       |
       |	   |  The  maximum  size of the core file. When 0, not |
       |	   | core files  are  created.	When  core  files  are |
       |	   | larger  than this size, they will be truncated at |
       |	   | this size. 				       |
       |	   |						       |
       | totalmem  |						       |
       |	   |						       |
       |	   |  The maximum size of the memory of  the  process, |
       |	   | in bytes.					       |
       |	   |						       |
       |virtualmem |						       |
       |	   |						       |
       |	   |  The  maximum  size of the virtual memory for the |
       |	   | process, in bytes. 			       |
       |	   |						       |
       |   data    |						       |
       |	   |						       |
       |	   |  The maximum size of the  data  segment  for  the |
       |	   | process, in bytes. 			       |
       |	   |						       |
       |  stack    |						       |
       |	   |						       |
       |	   |  The maximum size of the process stack, in bytes. |
       |	   |						       |
       |   rss	   |						       |
       |	   |						       |
       |	   |  The  maximum number of virtual pages resident in |
       |	   | RAM					       |
       |	   |						       |
       | maxproc   |						       |
       |	   |						       |
       |	   |  The maximum number of processes that can be cre- |
       |	   | ated for the real user ID of the calling process. |
       |	   |						       |
       | memlock   |						       |
       |	   |						       |
       |	   |  The  maximum  number of bytes of memory that may |
       |	   | be locked into RAM.			       |
       |	   |						       |
       |   cpu	   |						       |
       |	   |						       |
       |	   |  The amount of time the process is allowed to use |
       |	   | the CPU.					       |
       |	   |						       |
       | filesize  |						       |
       |	   |						       |
       |	   |  The  maximum  size  of  the data segment for the |
       |	   | process, in bytes. 			       |
       |	   |						       |
       |openfiles  |						       |
       |	   |						       |
       |	   |  One more than the maximum number	of  open  file |
       |	   | descriptors.				       |
       |	   |						       |
       +-----------+---------------------------------------------------+
EXAMPLES

       Example #1

	      Example use of posix_getrlimit(3)

	      <?php

	      $limits = posix_getrlimit();

	      print_r($limits);
	      ?>

	      The above example will output something similar to:

	      Array
	      (
		  [soft core] => 0
		  [hard core] => unlimited
		  [soft data] => unlimited
		  [hard data] => unlimited
		  [soft stack] => 8388608
		  [hard stack] => unlimited
		  [soft totalmem] => unlimited
		  [hard totalmem] => unlimited
		  [soft rss] => unlimited
		  [hard rss] => unlimited
		  [soft maxproc] => unlimited
		  [hard maxproc] => unlimited
		  [soft memlock] => unlimited
		  [hard memlock] => unlimited
		  [soft cpu] => unlimited
		  [hard cpu] => unlimited
		  [soft filesize] => unlimited
		  [hard filesize] => unlimited
		  [soft openfiles] => 1024
		  [hard openfiles] => 1024
	      )

NOTES

       Note

	       This is a not POSIX function, but is common on BSD and System V systems. If the system does not support this function, then it will
	      not be included at compile time. This may be checked with function_exists(3).

SEE ALSO

       man page GETRLIMIT(2).

PHP Documentation Group 													POSIX_GETRLIMIT(3)
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