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Full Discussion: Issue with while loop?
Top Forums Shell Programming and Scripting Issue with while loop? Post 302965468 by sea on Friday 29th of January 2016 12:34:01 PM
Old 01-29-2016
From what i've found, it seems to valid for mountpoints with spaces in any of the directory structure segments.

With this code, only the first part of a path with a space will be read, and will be missing in the tempfile all together.
Code:
df -h | grep sbl| awk '{print $5}' > /home/greg/fs.out

So, one could remove awk alltogether, but then read the file differently:
Code:
while read _ _ _ _ _ line

Specialy since the 5th variable is only the percentage used, we only name/use the 6th variable, which will include any later variable (path with spaces) as well.

Did some other small changes.
Hope this helps
Code:
#!/bin/bash
#set -x
#
#	Variables
#
	TMP=$HOME/tmp/${0##*/}-fs.out
	HOSTNAME="${HOSTNAME:-$(hostname)}"
	# This will print nothing on my system
	SEARCH="sdb" ## sbl sdb
#
#	Function
#
	check4missing() { # VALUE
	# Compares the current date versus the latest found backup dir
	# Returns false if today's date is not found
		fdate=$(date "+%Y-%m-%d")
		latest_bkp=$(ls -l |grep -v snapmirror | tail -1|awk '{print $9}')
		bkp_fldr_timestamp=$(echo "$latest_bkp"|cut -f3 -d .|cut -f1 -d _)
		if [ "${fdate}" != "${bkp_fldr_timestamp}" ]
		then	return 1
		else	return 0
		fi
	}
#
#	Action
#
	df -h | grep $SEARCH > "$TMP"
#
#	Display
#
	if [ -s "$TMP" ]
	then	# Tempfile has content
		while read _ _  _ _ line
		do 	
			this_snapshot="${line}/.snapshot"
			if [ -d "$this_snapshot" ]
			then
				cd "$this_snapshot"
				if check4missing
				then
					echo "Today's backup is missing for $this_snapshot on $HOSTNAME"
				else
					echo "File system backup has been taken for $this_snapshot on $HOSTNAME"
				fi
			else
				echo "snapshot directory not found on \"$this_snapshot\""
			fi
		done < "$TMP"
	else	# Tempfile is empty
		echo "No netapp filesystems found"
		exit 1
	fi
	rm "$TMP"
	exit 0


Last edited by sea; 02-01-2016 at 07:53 AM.. Reason: changed code
This User Gave Thanks to sea For This Post:
 

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ZGREP(1)                                                      General Commands Manual                                                     ZGREP(1)

NAME
zgrep - search possibly compressed files for a regular expression SYNOPSIS
zgrep [ grep_options ] [ -e ] pattern filename... DESCRIPTION
Zgrep invokes grep on compressed or gzipped files. These grep options will cause zgrep to terminate with an error code: (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*). All other options specified are passed directly to grep. If no file is specified, then the standard input is decompressed if necessary and fed to grep. Otherwise the given files are uncompressed if necessary and fed to grep. If the GREP environment variable is set, zgrep uses it as the grep program to be invoked. EXIT CODE
2 - An option that is not supported was specified. AUTHOR
Charles Levert (charles@comm.polymtl.ca) SEE ALSO
grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1) ZGREP(1)
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