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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

df

df(1M)																	    df(1M)

NAME

       df - report number of free file system disk blocks

SYNOPSIS

       FStype] specific_options] [special|directory]...

DESCRIPTION

       The  command  displays  the  number  of free 512-byte blocks and free inodes available for file systems by examining the counts kept in the
       superblock or superblocks.  If a special or a directory is not specified, the free space on all mounted file systems is displayed.  If  the
       arguments  to are path names, reports on the file systems containing the named files.  If the argument to is a special of an unmounted file
       system, the free space in the unmounted file system is displayed.

   Options
       recognizes the following options:

	      Report only the number of kilobytes (KB) free.

	      Report the number of files free.

	      Report only the actual count of the blocks in the free list
			     (free inodes are not reported).

	      Report only on the
			     FStype file system type (see fstyp(1M)).

	      Report the entire structure described in
			     statvfs(2).

	      Report the total number of inodes,
			     the number of free inodes, number of used inodes, and the percentage of inodes in use.

	      Report the allocation in kilobytes (KB).

	      Report on local file systems only.

	      Report the file system name.
			     If used with no other options, display a list of mounted file system types.

	      Specify options specific to each file system type.
			     specific_options is a comma-separated list of suboptions intended for a specific FStype module of the  command.   See
			     the file-system-specific manual entries for further details.

	      Report the name of the file system, the size of the file system,
			     the number of blocks used, the number of blocks free, the percentage of blocks used and the directory below which the
			     file system hierarchy appears.

	      Do not sync the file system data on the disk before
			     reporting the usage.  Note that the data reported by may not be up to date.

	      Report the total allocated block figures and the number of free blocks.

	      Report the percentage of blocks used,
			     the number of blocks used, and the number of blocks free.	This option cannot be used with other options.

	      Echo the completed command line, but perform no other action.
			     The command line is generated by incorporating the user-specified options and other  information  derived	from  This
			     option allows the user to verify the command line.

EXTERNAL INFLUENCES

   Environment Variables
       determines the language in which messages are displayed.

       If is not specified in the environment or is set to the empty string, the value of is used as a default for each unspecified or empty vari-
       able.  If is not specified or is set to the empty string, a default of "C" (see lang(5)) is used instead of

       If any internationalization variable contains an invalid setting, behaves as if all internationalization variables are  set  to	"C".   See
       environ(5).

   International Code Set Support
       Single-byte and multi-byte character code sets are supported.

EXAMPLES

       Report the number of free disk blocks for all mounted file systems:

       Report the number of free disk blocks for all mounted HFS file systems:

       Report the number of free files for all mounted NFS file systems:

       Report the total allocated block figures and the number of free blocks, for all mounted file systems:

       Report the total allocated block figures and the number of free blocks, for the file system mounted as

FILES

       File system devices
       Static information about the file systems
       Mounted file system table

SEE ALSO

       du(1), df_hfs(1M), df_vxfs(1M), fsck(1M), fstyp(1M), statvfs(2), fstab(4), mnttab(4).

STANDARDS CONFORMANCE

																	    df(1M)
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