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Full Discussion: A logical problem.
Top Forums Shell Programming and Scripting A logical problem. Post 302407620 by vino on Friday 26th of March 2010 01:28:51 AM
Old 03-26-2010
Quote:
Originally Posted by dashok.83
I'm having a logical problem.Can anybody help me.

Code:
while [[ ! -e $ZipFile ]]
do
  echo " Enter the Zip File Name   : \c"
  read ZipFile
done

In the above snippet - I want it ask for file name first time and once validation fails, I want it add a msg that its entered file name doesn't exist and ten prompt for file name again.

Could be silly.- But it just that I not able get a logic for it.
Instead you could change the existing message to

Code:
while [[ ! -f $ZipFile ]]
do
  echo "Enter a valid Zip File Name   : \c"
  read ZipFile
done

 

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

NAME
lvdisplay - display attributes of a logical volume SYNOPSIS
lvdisplay [-c|--colon] [-d|--debug] [-h|-?|--help] [--ignorelockingfailure] [--maps] [-P|--partial] [-v|--verbose] LogicalVolumePath [Logi- calVolumePath...] DESCRIPTION
lvdisplay allows you to see the attributes of a logical volume like size, read/write status, snapshot information etc. lvs (8) is an alternative that provides the same information in the style of ps (1). lvs is recommended over lvdisplay. OPTIONS
See lvm for common options. -c, --colon Generate colon separated output for easier parsing in scripts or programs. N.B. lvs (8) provides considerably more control over the output. The values are: * logical volume name * volume group name * logical volume access * logical volume status * internal logical volume number * open count of logical volume * logical volume size in sectors * current logical extents associated to logical volume * allocated logical extents of logical volume * allocation policy of logical volume * read ahead sectors of logical volume * major device number of logical volume * minor device number of logical volume -m, --maps Display the mapping of logical extents to physical volumes and physical extents. Examples "lvdisplay -v /dev/vg00/lvol2" shows attributes of that logical volume. If snapshot logical volumes have been created for this original logical volume, this command shows a list of all snapshot logical volumes and their status (active or inactive) as well. "lvdisplay /dev/vg00/snapshot" shows the attributes of this snapshot logical volume and also which original logical volume it is associated with. SEE ALSO
lvm(8), lvcreate(8), lvscan(8) Sistina Software UK LVM TOOLS 2.02.44-cvs (02-17-09) LVDISPLAY(8)
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