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Full Discussion: How to: Parse text string into variables using Korn shell
Top Forums Shell Programming and Scripting How to: Parse text string into variables using Korn shell Post 302198303 by shew01 on Thursday 22nd of May 2008 02:54:47 PM
Old 05-22-2008
How to: Parse text string into variables using Korn shell
I am writing a script to keep check on free disk space, and I would like to find a way to parse $LINE (see code below) into a numeric value (for free disk space percentage) and a string value (for mount point). If possible, I would like to avoid sed or any additional use of awk since I am not very familiar with those utilities. All help is appreciated. Thanks in advance.

Code:
ScriptName=$(basename $0)			# Equivalent shorthand code is: ${0##*/}

TempFile_NME=${DBA_TMP}/${ScriptName}.tmp

df -h | grep / | awk '{ print $5, $6 }'>$TempFile_NME

while read LINE
	do
		echo "$LINE"
	done < $TempFile_NME

 

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LEARN ABOUT HPUX

acctsuspend

acctsuspend(5)							File Formats Manual						    acctsuspend(5)

NAME

       acctsuspend, acctresume - suspend and resume accounting when available disk space reaches threshold

VALUES

   Failsafe
       Default.

   Default
       acctsuspend:

       acctresume:

   Allowed values
       acctresume:

       acctsuspend:

   Recommended values
       acctsuspend:

       acctresume: (But more than acctsuspend)

DESCRIPTION

       The  and  tunables  control when accounting stops and resumes due to disk space constraints.  When free disk space on the file system being
       used by accounting reaches the suspension threshold, which is the percentage relative to the percentage of disk space available only to the
       superuser,  accounting  is suspended until such time as the free disk space reaches the resumption threshold, which is the percentage rela-
       tive to the percentage of disk space available only to the superuser.

	      Note: Since the and values are specified relative to the percentage of disk space available only to the superuser,  negative  values
	      of  these  parameters can make sense.  For example, if the superuser has reserved 10 percent of the disk space on the file system at
	      file system creation time, and acctsuspend is -5 and acctresume is 0, the suspension threshold will be 5 percent of the  total  disk
	      space and the resumption threshold will be 10 percent of the total disk space.

   Who Is Expected to Change This Tunable?
       Anyone using accounting.

   Restrictions on Changing
       Changes to this tunable take effect at the next reboot.

   When Should the Value of This Tunable Be Raised?
       Increasing  either  variable  should  be  considered  when  it is necessary to maintain a higher percentage of free space on the accounting
       filesystem.

   What Are the Side Effects of Raising the Value of This Tunable?
       The higher either value is, the less accounting data may be captured.  The further the values are separated,  the  greater  the	amount	of
       potentially lost accounting data.

   When Should the Value of This Tunable Be Lowered?
       If  additional disk space is needed for accounting data, and it cannot be obtained by moving files off of the filesystem, then the value of
       should be lowered.

   What Are the Side Effects of Lowering the Value of This Tunable?
       Filesystem performance (writing accounting records) decreases as the filesystem fills up.  In turn, this will decrease the overall  perfor-
       mance of accounting processes.

   What Other Tunables Should Be Changed at the Same Time?
       When changing either of these tunables, both should be considered.

WARNINGS

       All  HP-UX kernel tunable parameters are release specific.  This parameter may be removed or have its meaning changed in future releases of
       HP-UX.

       Installation of optional kernel software, from HP or other vendors, may cause changes to tunable  parameter  values.   After  installation,
       some  tunable  parameters may no longer be at the default or recommended values.  For information about the effects of installation on tun-
       able values, consult the documentation for the kernel software being installed.	For information about optional kernel  software  that  was
       factory installed on your system, see at

AUTHOR

       and were developed by HP.

SEE ALSO

       accton(1M).

							     Tunable Kernel Parameters						    acctsuspend(5)
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