Shell Programming and Scripting

[greg@sbldev01 ~]$ bash -xv ./fs.sh
#!/bin/bash
#set -x
#
#       Variables
#
        TMP=$HOME/tmp/${0##*/}-fs.out
+ TMP=/home/greg/tmp/fs.sh-fs.out
        HOSTNAME="${HOSTNAME:-$(hostname)}"
+ HOSTNAME=sbldev01
        # This will print nothing on my system
        SEARCH="sdb" ## sbl sdb
+ SEARCH=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"
+ df -h
+ grep datastage
#
#       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
+ '[' -s /home/greg/tmp/fs.sh-fs.out ']'
+ read _ _ _ _ line
+ this_snapshot=/.snapshot
+ '[' -d /.snapshot ']'
+ echo 'snapshot directory not found on "/.snapshot"'
snapshot directory not found on "/.snapshot"
+ read _ _ _ _ line
+ this_snapshot=/sblmnt/sb_devm2_sbl_01/.snapshot
+ '[' -d /sblmnt/sb_devm2_sbl_01/.snapshot ']'
+ cd /sblmnt/sb_devm2_sbl_01/.snapshot
+ check4missing
++ date +%Y-%m-%d
+ fdate=2016-02-01
++ ls -l
++ grep -v snapmirror
++ tail -1
++ awk '{print $9}'
+ latest_bkp=h.m20.2016-02-01_0820
++ echo h.m20.2016-02-01_0820
++ cut -f3 -d .
++ cut -f1 -d _
+ bkp_fldr_timestamp=2016-02-01
+ '[' 2016-02-01 '!=' 2016-02-01 ']'
+ return 0
+ echo 'Today'\''s backup is missing for /sblmnt/sb_devm2_sbl_01/.snapshot on sbldev01'
Today's backup is missing for /sblmnt/sb_devm2_sbl_01/.snapshot on sbldev01
+ read _ _ _ _ line
+ this_snapshot=/.snapshot
+ '[' -d /.snapshot ']'
+ echo 'snapshot directory not found on "/.snapshot"'
snapshot directory not found on "/.snapshot"
+ read _ _ _ _ line
+ this_snapshot=/sblmnt/sb_devm2_sbl_02/.snapshot
+ '[' -d /sblmnt/sb_devm2_sbl_02/.snapshot ']'
+ cd /sblmnt/sb_devm2_sbl_02/.snapshot
+ check4missing
++ date +%Y-%m-%d
+ fdate=2016-02-01
++ ls -l
++ grep -v snapmirror
++ tail -1
++ awk '{print $9}'
+ latest_bkp=h.m20.2016-02-01_0820
++ echo h.m20.2016-02-01_0820
++ cut -f3 -d .
++ cut -f1 -d _
+ bkp_fldr_timestamp=2016-02-01
+ '[' 2016-02-01 '!=' 2016-02-01 ']'
+ return 0
+ echo 'Today'\''s backup is missing for /sblmnt/sb_devm2_sbl_02/.snapshot on sbldev01'
Today's backup is missing for /sblmnt/sb_devm2_sbl_02/.snapshot on sbldev01
+ read _ _ _ _ line
+ this_snapshot=/.snapshot
+ '[' -d /.snapshot ']'
+ echo 'snapshot directory not found on "/.snapshot"'
snapshot directory not found on "/.snapshot"
+ read _ _ _ _ line
+ this_snapshot=/sblmnt/sb_devm2_sbl_03/.snapshot
+ '[' -d /sblmnt/sb_devm2_sbl_03/.snapshot ']'
+ cd /sblmnt/sb_devm2_sbl_03/.snapshot
+ check4missing
++ date +%Y-%m-%d
+ fdate=2016-02-01
++ ls -l
++ grep -v snapmirror
++ tail -1
++ awk '{print $9}'
+ latest_bkp=h.m20.2016-02-01_0820
++ echo h.m20.2016-02-01_0820
++ cut -f3 -d .
++ cut -f1 -d _
+ bkp_fldr_timestamp=2016-02-01
+ '[' 2016-02-01 '!=' 2016-02-01 ']'
+ return 0
+ echo 'Today'\''s backup is missing for /sblmnt/sb_devm2_sbl_01/.snapshot on sbldev01'
Today's backup is missing for /sblmnt/sb_devm2_sbl_01/.snapshot on sbldev01
+ read _ _ _ _ line
#       rm "$TMP"
        exit 0
+ exit 0

if [ "${fdate}" != "${bkp_fldr_timestamp}" ]

			[ -z "$line" ] && continue
			this_snapshot="${line}/.snapshot"